centro-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Origin: Of multiple origins. Partly a borrowing from Latin, combined with an English element. Partly a borrowing from Greek, combined with an English element. Etymons: Latin centrum , -o- connective; Greek κέντρον , -o- connective.

Etymology: < classical Latin centrum and its etymon ancient Greek κέντρον (see centre n.¹) + -o- connective. Compare French centro- (formations in which are found from the mid 18th cent.), German centro-, (now usually) zentro- (formations in which are found from at least the late 19th cent.).Attested earliest in the first half of the 17th cent. in the Latin loan centrobaric adj.; formations within English are found from the early 19th cent. Combining with second elements ultimately of Greek and Latin origin.

Forming adjectives and nouns relating to the centre of something or the condition of being central.

centroacinar adj.

Brit.

/ˌsɛntrəʊˈasᵻnə/

U.S.

/ˌsɛntroʊˈæsənər/

/ˌsɛntroʊˈæsəˌnɑr/

[after German centroacinär (P. Langerhans 1870, in Schmidts Jahrbücher 147 136; now usually zentroazinär)] located in the centre of an acinus, esp. of the pancreas.

ΚΠ

1873 H. Power tr. F. Boll in S. Stricker Man. Human & Compar. Histol. III. 471 These..cells of the excretory ducts, occupying almost the centre of the alveolus,..have been named by Langerhans (in the pancreas) ‘centro-acinar’ cells.

1990 Environmental Health Perspectives 85 9/1 A reasonable assumption is that inhalation of an acidic aerosol alters the pH within the tracheobronchial tree and perhaps at the centroacinar target sites for ozone.

2005 Cancer Cell 8 171 Evidence is presented for a centroacinar cell origin of the metaplastic ‘neoductules’.

centroclinal adj.

Brit.

/ˌsɛntrə(ʊ)ˈklʌɪnl/

U.S.

/ˌsɛntroʊˈklaɪn(ə)l/

Geology now rare dipping toward a common centre.

ΚΠ

1860 E. Hull Geol. Country Wigan 13 The structure of this western district of productive Coal-measures is that of a basin broken off near its centre by the Upholland fault, and at intervals traversed by faults which tend to disturb the centroclinal arrangement of the strata.

1916 Jrnl. Geol. (Chicago) 24 36 In one instance a flat surface was seen planing across a centroclinal basin of relatively soft rocks which were protected on the outside by hard layers.

2014 Jrnl. S. Amer. Earth Sci. 54 147/1 Around standing trees, centroclinal cross stratification..was identified.

centrodorsal adj.

Brit.

/ˌsɛntrə(ʊ)ˈdɔːsl/

U.S.

/ˌsɛntroʊˈdɔrs(ə)l/

[after French centro-dorsal ( H. M. D. de Blainville Manuel d'actinologie ou de zoophytologie (1834) 253)] Zoology located in the centre of the dorsal surface or back, esp. of a fossil crinoid.

ΚΠ

1837 Penny Cycl. IX. 387/2 We find..that the pelvis of Miller is the centro-dorsal joint (l'article centro-dorsal) of De Blainville.

1880 P. H. Carpenter in Jrnl. Linn. Soc. 15 193 A specimen with a more regular centrodorsal and pointed muscle-plates.

2001 V. M. Behan-Pelletier in R. B. Halliday et al. Acarol.: Proc. 10th Internat. Congr. 51/2 In contrast to immatures of Oribatellidae, centrodorsal setae are small in T[egoribates] americanus.

† centrogenesis n. Obsolete rare (in the terminology of L. H. Bailey) evolution through the acquisition of radial symmetry; radial organization as assumed by plants and some animals; cf. dipleurogenesis n.

ΚΠ

1896 L. H. Bailey Survival of Unlike i. 17 We may, therefore, contrast these two great lines of ascent which, with so many vicissitudes, have come up through the ages, as Dipleurogenesis and Centrogenesis.

† centrogenetic adj. Obsolete rare of or relating to centrogenesis.

ΚΠ

1896 L. H. Bailey Survival of Unlike i. 19 With this development has come the perfection of centrogenetic form.

centrolecithal adj.

Brit.

/ˌsɛntrə(ʊ)ˈlɛsᵻθl/

U.S.

/ˌsɛntroʊˈlɛsəθ(ə)l/

Biology having the yolk in the centre of the egg or egg cell; cf. telolecithal adj. at telo- comb. form¹ .

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk

yolked1584

vitelliferous1819

vitelline1835

yolk1836

vitellary1847

vitelligenous1859

vitelligine1864

vitellogenous1878

alecithal1880

centrolecithal1880

heterolecithal1892

homolecithal1892

vitelligerous1898

isolecithal1926

ovovitelline1945

vitellogenetic1961

vitellogenic1964

1880 F. M. Balfour Treat. Compar. Embryol. I. iii. 90 The food-yolk is however placed, not at one pole, but at the centre of the ovum. This group of ova I propose to name centrolecithal. [Note] For..the terms telolecithal and centrolecithal I am indebted to Mr Lankester.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) IX. 459 Centrolecithal, or centrally located yolk, occurs in eggs of insects and cephalopod mollusks.

2014 D. G. Smith & M. P. Schenk Exploring Zool. (ed. 2) iv. 53/2 Because of the unique distribution of yolk in centrolecithal eggs, cleavage occurs only in the cell's periphery.

centrolinead n.

Brit.

/ˌsɛntrə(ʊ)ˈlɪnɪad/

U.S.

/ˌsɛntroʊˈlɪniˌæd/

/ˌsɛntroʊˈlɪniəd/

now historical and rare an instrument used to facilitate the drawing of lines in a perspective drawing, consisting of three rulers joined together in such a way that the centrally located ruler, along which lines are to be drawn, may be orientated correctly by adjusting the position of the other two.

ΚΠ

1814 P. Nicholson in Trans. Soc. Arts 32 67 An instrument of my invention called a centro-linead, for drawing lines to inaccessible vanishing points in perspective.

1901 Surveyor (Inst. Surveyors, New S. Wales) 15 Oct. 98 With the aid of such instruments as the perspectograph, centrolinead, and perspectometer, a great many points can be located in a short time.

1982 Math. Gaz. 66 205 Soon afterwards they [sc. the Society of Arts] awarded him [sc. Peter Nicholson] twenty guineas and later their silver medal for his invention of the centrolinead.

† centrolineal n. and adj.

Brit.

/ˌsɛntrə(ʊ)ˈlɪnɪəl/

U.S.

/ˌsɛntroʊˈlɪniəl/

Obsolete rare (a) n. any of a series of straight lines which meet at a single point; (b) adj. converging to a single point.

ΚΠ

1815 P. Nicholson Treat. Pract. Perspective Pref. p. iv All the centrolineals, or converging lines, may be drawn at once.

1815 P. Nicholson Treat. Pract. Perspective 25 Draw H h, J j, K k, M m, N n, P p, centrolineal to A t³, C u³.

1864 P. A. Nuttall Craig's New Universal Dict. Suppl. (citing Nicholson) Centrolineal,..applied to lines converging to a centre. [Also in later dictionaries.]]

centroplasm n.

Brit.

/ˈsɛntrə(ʊ)plaz(ə)m/

U.S.

/ˈsɛntrəˌplæz(ə)m/

Biology a central zone or region of cytoplasm; spec. (a) the cytoplasm within, or immediately surrounding, the centrosome; (b) a more or less distinct central region in many cyanobacterial cells, containing less photosynthetic pigment and more nucleic acid material than the peripheral cytoplasm (chromatoplasm).

ΚΠ

1891 Jrnl. Coll. Sci. Imperial Univ. Japan 4 57 There is always more or less concentration of protoplasm toward the centre [of a spider egg] which may be called the centroplasm.

1897 Jrnl. Royal Microsc. Soc. 192 Dr. R. von Erlanger..concludes that the centrodeutoplasm (= archoplasm) consists of a special substance which is not present in the centroplasm [German Centroplasma] (= attraction-sphere) of ova and of somatic cells.

1921 Physiol. Abstr. 6 228 The protoplast in the Cyanophyceæ consists of two parts, chromatoplasm and a hyaline centroplasm.

1989 Plant Physiol. 89 784/1 The label was found predominantly in the thylakoid regions and was practically absent from the centroplasm.

2009 W. Platzer Color Atlas Human Anat. (ed. 6) I. 4/2 Together with the specialized cytoplasm surrounding them, the centroplasm, they [sc. the centrioles] form the centrosome.

† centrostaltic adj. Medicine Obsolete rare (in the terminology of Marshall Hall) designating diseases believed to originate in the spinal element of a reflex arc.

ΚΠ

1850 M. Hall in Lancet 1 June 651/1 I have shown that all spasmodic or convulsive diseases are diseases of the diastaltic nervous system..and that they assume chiefly three forms—(1.) The Diastaltic, (2.) The Centro-staltic, (3.) The Cata-staltic, as their source of action is seated in an esodic nerve, the spinal centre, or an exodic nerve.

† centrostomatous adj. Zoology Obsolete rare (in an animal with radial symmetry) having the mouth located centrally.Apparently only attested in dictionaries or glossaries.

ΚΠ

1909 Cent. Dict. Suppl. Centrostomatous, having the mouth placed centrally, as a starfish.

centrosymmetric adj.

Brit.

/ˌsɛntrə(ʊ)sᵻˈmɛtrɪk/

U.S.

/ˌsɛntroʊsəˈmɛtrɪk/

(a) (of a matrix or other array of numbers) having identical entries in positions that are symmetric about the centre; (b) (chiefly Crystallography) of, relating to, or exhibiting centrosymmetry; = centrosymmetrical adj.

ΚΠ

1881 London, Edinb., & Dublin Philos. Mag. 5th Ser. 12 392 A centre-skew determinant of the 2nth order is equal in magnitude to the corresponding centro-symmetric determinant.

1898 Amer. Jrnl. Sci. 155 177 The first group are holohedral, triclinic, and since they possess a centre of symmetry, Zirkel and others refer to them as centro-symmetric.

1942 Amer. Math. Monthly 49 247 This matrix frequently turns out to be centrosymmetric.

2006 R. Tilley Crystals & Crystal Structures iv. 79/2 Such physical properties, called centrosymmetric physical properties, will only differentiate between 11 of the point groups.

centrosymmetrical adj.

Brit.

/ˌsɛntrə(ʊ)sᵻˈmɛtrᵻkl/

U.S.

/ˌsɛntroʊsəˈmɛtrək(ə)l/

chiefly Crystallography exhibiting centrosymmetry.

ΚΠ

1875 N. Story-Maskelyne in Nature 7 Jan. 190/2 A crystal system that is simply centro-symmetrical presents the kind of symmetry characteristic of what is called the Anorthic system of crystallography.

1931 Proc. Royal Soc. A. 132 549 The two centrosymmetrical molecules in the unit cell are reflections of one another.

2004 H.-R. Wenk & A. Bluakh Minerals iii. 52 A majority of minerals are centrosymmetrical: an exception is quartz.

centrosymmetry n.

Brit.

/ˌsɛntrə(ʊ)ˈsɪmᵻtri/

U.S.

/ˌsɛntroʊˈsɪmətri/

chiefly Crystallography (in a lattice structure, esp. a crystal) symmetry with respect to inversion (inversion n. 23).

ΚΠ

1875 N. Story-Maskelyne in Chem. News 12 Feb. 64/2 So m and n are possible planes.., and, on the assumption of centro-symmetry are actual planes.

1964 C. Bunn Crystals vi. 87 There is one other type of symmetry which is very common in crystals, the type known as centrosymmetry.

2011 E. B. Tadmor & R. E. Miller Modeling Materials iii. 127 A crystal structure which possesses a center of inversion is said to possess centrosymmetry.

centrotylote adj. and n.

Brit.

/ˌsɛntrə(ʊ)ˈtʌɪləʊt/

U.S.

/ˌsɛntroʊˈtaɪˌloʊt/

Zoology (a) adj. (of a sponge spicule, esp. an oxea or microxea) having a central bulge; (also) designating such a bulge; cf. tylote n.; (b) n. a centrotylote spicule (rare).

ΘΚΠ

the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having central swelling (of biradiate)

centrotylote1887

1887 W. J. Sollas in Encycl. Brit. XXII. 417/2 (caption) The same [sc. an oxyaster], with two acines (a centrotylote microxea).

1900 Proc. Zool. Soc. 131 The microstrongyles..are occasionally centrotylote.

1998 Systematic Biol. 47 363/1 Genus Erylus... Geodiidae whose cortical skeleton is composed of aspidasters and an outer layer of microxeas most often centrotylotes.

2010 H. M. Reiswig et al. in J. H. Thorp & A. P. Covich Ecol. & Classif. N. Amer. Freshwater Invertebr. (ed. 3) iv. 110/2 Ephydatia cooperensis..moderately thick oxeas, 210–(343)—439 μm in length, with slight centrotylote bulb.

This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022).

单词	centro-
释义	centro-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Origin: Of multiple origins. Partly a borrowing from Latin, combined with an English element. Partly a borrowing from Greek, combined with an English element. Etymons: Latin centrum , -o- connective; Greek κέντρον , -o- connective. Etymology: < classical Latin centrum and its etymon ancient Greek κέντρον (see centre n.¹) + -o- connective. Compare French centro- (formations in which are found from the mid 18th cent.), German centro-, (now usually) zentro- (formations in which are found from at least the late 19th cent.).Attested earliest in the first half of the 17th cent. in the Latin loan centrobaric adj.; formations within English are found from the early 19th cent. Combining with second elements ultimately of Greek and Latin origin. Forming adjectives and nouns relating to the centre of something or the condition of being central. centroacinar adj. Brit. /ˌsɛntrəʊˈasᵻnə/ , U.S. /ˌsɛntroʊˈæsənər/ , /ˌsɛntroʊˈæsəˌnɑr/ [after German centroacinär (P. Langerhans 1870, in Schmidts Jahrbücher 147 136; now usually zentroazinär)] located in the centre of an acinus, esp. of the pancreas. ΚΠ 1873 H. Power tr. F. Boll in S. Stricker Man. Human & Compar. Histol. III. 471 These..cells of the excretory ducts, occupying almost the centre of the alveolus,..have been named by Langerhans (in the pancreas) ‘centro-acinar’ cells. 1990 Environmental Health Perspectives 85 9/1 A reasonable assumption is that inhalation of an acidic aerosol alters the pH within the tracheobronchial tree and perhaps at the centroacinar target sites for ozone. 2005 Cancer Cell 8 171 Evidence is presented for a centroacinar cell origin of the metaplastic ‘neoductules’. centroclinal adj. Brit. /ˌsɛntrə(ʊ)ˈklʌɪnl/ , U.S. /ˌsɛntroʊˈklaɪn(ə)l/ Geology now rare dipping toward a common centre. ΚΠ 1860 E. Hull Geol. Country Wigan 13 The structure of this western district of productive Coal-measures is that of a basin broken off near its centre by the Upholland fault, and at intervals traversed by faults which tend to disturb the centroclinal arrangement of the strata. 1916 Jrnl. Geol. (Chicago) 24 36 In one instance a flat surface was seen planing across a centroclinal basin of relatively soft rocks which were protected on the outside by hard layers. 2014 Jrnl. S. Amer. Earth Sci. 54 147/1 Around standing trees, centroclinal cross stratification..was identified. centrodorsal adj. Brit. /ˌsɛntrə(ʊ)ˈdɔːsl/ , U.S. /ˌsɛntroʊˈdɔrs(ə)l/ [after French centro-dorsal ( H. M. D. de Blainville Manuel d'actinologie ou de zoophytologie (1834) 253)] Zoology located in the centre of the dorsal surface or back, esp. of a fossil crinoid. ΚΠ 1837 Penny Cycl. IX. 387/2 We find..that the pelvis of Miller is the centro-dorsal joint (l'article centro-dorsal) of De Blainville. 1880 P. H. Carpenter in Jrnl. Linn. Soc. 15 193 A specimen with a more regular centrodorsal and pointed muscle-plates. 2001 V. M. Behan-Pelletier in R. B. Halliday et al. Acarol.: Proc. 10th Internat. Congr. 51/2 In contrast to immatures of Oribatellidae, centrodorsal setae are small in T[egoribates] americanus. † centrogenesis n. Obsolete rare (in the terminology of L. H. Bailey) evolution through the acquisition of radial symmetry; radial organization as assumed by plants and some animals; cf. dipleurogenesis n. ΚΠ 1896 L. H. Bailey Survival of Unlike i. 17 We may, therefore, contrast these two great lines of ascent which, with so many vicissitudes, have come up through the ages, as Dipleurogenesis and Centrogenesis. † centrogenetic adj. Obsolete rare of or relating to centrogenesis. ΚΠ 1896 L. H. Bailey Survival of Unlike i. 19 With this development has come the perfection of centrogenetic form. centrolecithal adj. Brit. /ˌsɛntrə(ʊ)ˈlɛsᵻθl/ , U.S. /ˌsɛntroʊˈlɛsəθ(ə)l/ Biology having the yolk in the centre of the egg or egg cell; cf. telolecithal adj. at telo- comb. form¹ . ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk yolked1584 vitelliferous1819 vitelline1835 yolk1836 vitellary1847 vitelligenous1859 vitelligine1864 vitellogenous1878 alecithal1880 centrolecithal1880 heterolecithal1892 homolecithal1892 vitelligerous1898 isolecithal1926 ovovitelline1945 vitellogenetic1961 vitellogenic1964 1880 F. M. Balfour Treat. Compar. Embryol. I. iii. 90 The food-yolk is however placed, not at one pole, but at the centre of the ovum. This group of ova I propose to name centrolecithal. [Note] For..the terms telolecithal and centrolecithal I am indebted to Mr Lankester. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) IX. 459 Centrolecithal, or centrally located yolk, occurs in eggs of insects and cephalopod mollusks. 2014 D. G. Smith & M. P. Schenk Exploring Zool. (ed. 2) iv. 53/2 Because of the unique distribution of yolk in centrolecithal eggs, cleavage occurs only in the cell's periphery. centrolinead n. Brit. /ˌsɛntrə(ʊ)ˈlɪnɪad/ , U.S. /ˌsɛntroʊˈlɪniˌæd/ , /ˌsɛntroʊˈlɪniəd/ now historical and rare an instrument used to facilitate the drawing of lines in a perspective drawing, consisting of three rulers joined together in such a way that the centrally located ruler, along which lines are to be drawn, may be orientated correctly by adjusting the position of the other two. ΚΠ 1814 P. Nicholson in Trans. Soc. Arts 32 67 An instrument of my invention called a centro-linead, for drawing lines to inaccessible vanishing points in perspective. 1901 Surveyor (Inst. Surveyors, New S. Wales) 15 Oct. 98 With the aid of such instruments as the perspectograph, centrolinead, and perspectometer, a great many points can be located in a short time. 1982 Math. Gaz. 66 205 Soon afterwards they [sc. the Society of Arts] awarded him [sc. Peter Nicholson] twenty guineas and later their silver medal for his invention of the centrolinead. † centrolineal n. and adj. Brit. /ˌsɛntrə(ʊ)ˈlɪnɪəl/ , U.S. /ˌsɛntroʊˈlɪniəl/ Obsolete rare (a) n. any of a series of straight lines which meet at a single point; (b) adj. converging to a single point. ΚΠ 1815 P. Nicholson Treat. Pract. Perspective Pref. p. iv All the centrolineals, or converging lines, may be drawn at once. 1815 P. Nicholson Treat. Pract. Perspective 25 Draw H h, J j, K k, M m, N n, P p, centrolineal to A t³, C u³. 1864 P. A. Nuttall Craig's New Universal Dict. Suppl. (citing Nicholson) Centrolineal,..applied to lines converging to a centre. [Also in later dictionaries.]] centroplasm n. Brit. /ˈsɛntrə(ʊ)plaz(ə)m/ , U.S. /ˈsɛntrəˌplæz(ə)m/ Biology a central zone or region of cytoplasm; spec. (a) the cytoplasm within, or immediately surrounding, the centrosome; (b) a more or less distinct central region in many cyanobacterial cells, containing less photosynthetic pigment and more nucleic acid material than the peripheral cytoplasm (chromatoplasm). ΚΠ 1891 Jrnl. Coll. Sci. Imperial Univ. Japan 4 57 There is always more or less concentration of protoplasm toward the centre [of a spider egg] which may be called the centroplasm. 1897 Jrnl. Royal Microsc. Soc. 192 Dr. R. von Erlanger..concludes that the centrodeutoplasm (= archoplasm) consists of a special substance which is not present in the centroplasm [German Centroplasma] (= attraction-sphere) of ova and of somatic cells. 1921 Physiol. Abstr. 6 228 The protoplast in the Cyanophyceæ consists of two parts, chromatoplasm and a hyaline centroplasm. 1989 Plant Physiol. 89 784/1 The label was found predominantly in the thylakoid regions and was practically absent from the centroplasm. 2009 W. Platzer Color Atlas Human Anat. (ed. 6) I. 4/2 Together with the specialized cytoplasm surrounding them, the centroplasm, they [sc. the centrioles] form the centrosome. † centrostaltic adj. Medicine Obsolete rare (in the terminology of Marshall Hall) designating diseases believed to originate in the spinal element of a reflex arc. ΚΠ 1850 M. Hall in Lancet 1 June 651/1 I have shown that all spasmodic or convulsive diseases are diseases of the diastaltic nervous system..and that they assume chiefly three forms—(1.) The Diastaltic, (2.) The Centro-staltic, (3.) The Cata-staltic, as their source of action is seated in an esodic nerve, the spinal centre, or an exodic nerve. † centrostomatous adj. Zoology Obsolete rare (in an animal with radial symmetry) having the mouth located centrally.Apparently only attested in dictionaries or glossaries. ΚΠ 1909 Cent. Dict. Suppl. Centrostomatous, having the mouth placed centrally, as a starfish. centrosymmetric adj. Brit. /ˌsɛntrə(ʊ)sᵻˈmɛtrɪk/ , U.S. /ˌsɛntroʊsəˈmɛtrɪk/ (a) (of a matrix or other array of numbers) having identical entries in positions that are symmetric about the centre; (b) (chiefly Crystallography) of, relating to, or exhibiting centrosymmetry; = centrosymmetrical adj. ΚΠ 1881 London, Edinb., & Dublin Philos. Mag. 5th Ser. 12 392 A centre-skew determinant of the 2nth order is equal in magnitude to the corresponding centro-symmetric determinant. 1898 Amer. Jrnl. Sci. 155 177 The first group are holohedral, triclinic, and since they possess a centre of symmetry, Zirkel and others refer to them as centro-symmetric. 1942 Amer. Math. Monthly 49 247 This matrix frequently turns out to be centrosymmetric. 2006 R. Tilley Crystals & Crystal Structures iv. 79/2 Such physical properties, called centrosymmetric physical properties, will only differentiate between 11 of the point groups. centrosymmetrical adj. Brit. /ˌsɛntrə(ʊ)sᵻˈmɛtrᵻkl/ , U.S. /ˌsɛntroʊsəˈmɛtrək(ə)l/ chiefly Crystallography exhibiting centrosymmetry. ΚΠ 1875 N. Story-Maskelyne in Nature 7 Jan. 190/2 A crystal system that is simply centro-symmetrical presents the kind of symmetry characteristic of what is called the Anorthic system of crystallography. 1931 Proc. Royal Soc. A. 132 549 The two centrosymmetrical molecules in the unit cell are reflections of one another. 2004 H.-R. Wenk & A. Bluakh Minerals iii. 52 A majority of minerals are centrosymmetrical: an exception is quartz. centrosymmetry n. Brit. /ˌsɛntrə(ʊ)ˈsɪmᵻtri/ , U.S. /ˌsɛntroʊˈsɪmətri/ chiefly Crystallography (in a lattice structure, esp. a crystal) symmetry with respect to inversion (inversion n. 23). ΚΠ 1875 N. Story-Maskelyne in Chem. News 12 Feb. 64/2 So m and n are possible planes.., and, on the assumption of centro-symmetry are actual planes. 1964 C. Bunn Crystals vi. 87 There is one other type of symmetry which is very common in crystals, the type known as centrosymmetry. 2011 E. B. Tadmor & R. E. Miller Modeling Materials iii. 127 A crystal structure which possesses a center of inversion is said to possess centrosymmetry. centrotylote adj. and n. Brit. /ˌsɛntrə(ʊ)ˈtʌɪləʊt/ , U.S. /ˌsɛntroʊˈtaɪˌloʊt/ Zoology (a) adj. (of a sponge spicule, esp. an oxea or microxea) having a central bulge; (also) designating such a bulge; cf. tylote n.; (b) n. a centrotylote spicule (rare). ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having central swelling (of biradiate) centrotylote1887 1887 W. J. Sollas in Encycl. Brit. XXII. 417/2 (caption) The same [sc. an oxyaster], with two acines (a centrotylote microxea). 1900 Proc. Zool. Soc. 131 The microstrongyles..are occasionally centrotylote. 1998 Systematic Biol. 47 363/1 Genus Erylus... Geodiidae whose cortical skeleton is composed of aspidasters and an outer layer of microxeas most often centrotylotes. 2010 H. M. Reiswig et al. in J. H. Thorp & A. P. Covich Ecol. & Classif. N. Amer. Freshwater Invertebr. (ed. 3) iv. 110/2 Ephydatia cooperensis..moderately thick oxeas, 210–(343)—439 μm in length, with slight centrotylote bulb. This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022). < comb. form1814
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