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单词 medulla
释义

medullan.

Brit. /mɛˈdʌlə/, /mᵻˈdʌlə/, U.S. /məˈdələ/
Forms: late Middle English medulle, late Middle English– medulla, 1600s medull, 1700s medullam.
Origin: A borrowing from Latin. Etymon: Latin medulla.
Etymology: < classical Latin medulla marrow, pith, essential part, perhaps < the Indo-European base of smear n., with substitution of -d- for -r- after medius middle (see medium adj.) by folk etymology. Compare Middle French medule the central part of something (1402), Middle French, French médulle marrow (1564 in Rabelais; now only in sense 2a; compare French médulla (1970)).With spinal medulla (see sense 1b) compare classical Latin spinae medulla , post-classical Latin medulla spinalis (12th cent.); Middle French medulle de l'espine (beginning of the 16th cent.), spinale medulle (second half of the 16th cent.), French medulle espine (a1630); also ancient Greek μυελὸς ῥαχίτης , μυελὸς νωτιαῖος (both in Hippocrates). With medulle cerebellar (see quot. ?a1425 at sense 1b) compare post-classical Latin medulla cerebri (mid 3rd cent.). The use of classical Latin medulla in the figurative sense ‘essential part’ (compare sense 3) is probably after the corresponding use of ancient Greek μυελός (see myelo- comb. form). The Latin word occurs frequently in this sense in patristic writing, and in Latin work titles from the 15th cent.; compare marrow n.1 4a. The form medullam (see quot. ?1764 at sense 3) is perhaps intended as a Latin accusative.
Biology.
I. Technical uses.
1. Anatomy and Zoology.
a. The marrow of a bone.Before the 19th cent. the usual word in this sense is marrow. (In medical dictionaries of this period Latin medulla is normally glossed marrow.)
ΘΚΠ
the world > life > the body > structural parts > bone or bones > substance of bones > [noun] > bone-marrow
marroweOE
braina1398
medulla?a1425
bone marrow1590
the world > life > the body > structural parts > bone or bones > spine > [noun] > marrow of
marrowa1398
medulla?a1425
spinal marrow1578
pith1594
chine-marrow1661
thorny marrow1662
a1398 J. Trevisa tr. Bartholomaeus Anglicus De Proprietatibus Rerum (BL Add.) f. 63v Marogh hatte medulla in latin, for it moistiþ þe bones.]
?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 51v Wondez..þat smyteþ þe grete veynez & arteriez & nerues & medullas bringeþ in most perile.
?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 91 (MED) Drie vlcerez..be cured wiþ wex & wiþ medulla of a calfe þye.
1754 New & Compl. Dict. Arts & Sci. III. 2031/2 Medulla, marrow, in anatomy.
1813 J. Thomson Lect. Inflammation 393 The inner surface of the new bone..is lined with a membrane containing medulla.
1845 R. B. Todd & W. Bowman Physiol. Anat. I. 103 The cancelli are filled with fat, or medulla, the marrow of bone.
1854 C. H. Jones & E. H. Sieveking Man. Pathol. Anat. (1875) 871 Osteomyelitis..inflammation of the red osseous Medulla.
1904 Brit. Med. Jrnl. 17 Sept. 649 I put her on red medulla tabloids.
1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) xvii. 436 Inflammation..of the bone and its medulla (osteomyelitis) rarely occurs without some involvement of the periosteum.
b. The spinal cord (more fully spinal medulla, medulla spinalis). Formerly also: †the inner substance or white matter of the brain or spinal cord (obsolete).
ΘΚΠ
the world > life > the body > nervous system > cerebrospinal axis > brain > [noun] > substances of
medulla?a1425
pith1594
acervulus cerebri1791
brain sand1831
oleophosphoric acid1839
wetware1963
?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 69v For nyȝnes & noblenez of þe medulle cerebellar.
c1475 ( Surg. Treat. in MS Wellcome 564 f. 43v Þe Nucha from þe brayn..is clepid in þat place Medulla spinalis.
1651 ‘A. B.’ tr. L. Lessius Sir Walter Rawleigh's Ghost 87 The inward medulla or marrow of the brain.
1669 Philos. Trans. 1668 (Royal Soc.) 3 889 He affirms, that the whole Substance called the Medulla of the Brain and the After-brain is a Heap of Fibres or Vessels.
1797 J. Abernethy Surg. & Physiol. Ess. iii. 137 The medulla spinalis, or a substance of an apparently similar nature, was continued into the sacrum.
1825 Lancet 31 Dec. 494/1 A portion of the fractured bone had been driven into the medulla spinalis.
1877 M. Foster Text Bk. Physiol. iii. vi. 456 The loss of voluntary movement which follows upon a unilateral section of the medulla.
1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 120/1 The boundaries of the cinerea (cortex, etc.) and alba (medulla) were ascertained by comparing the similarly exposed surface of a fresh brain.
1968 Brain 91 366 The entire organization of the spinal cord..is constantly influenced by structures within the brain above the medulla spinalis.
1980 Gray's Anat. (ed. 36) vii. 864 (heading) The spinal medulla or cord.
c. = medulla oblongata n.
ΘΚΠ
the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > medulla oblongata
marrowa1398
medulla oblongata1668
medulla1722
oblongated marrow1822
macromyelon1846
myelencephalon1871
1722 J. Quincy Lexicon Physico-medicum (ed. 2) 51 The third [process] goes backwards on the upper side of the Medulla.
1899 T. C. Allbutt et al. Syst. Med. VII. 222 A softening patch on the left side of the medulla.
1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) iii. 292 The virus [sc. poliovirus] invades the grey matter of the spinal cord and the medulla and motor cortex of the brain.
d. The central part of an organ where distinguishable from an outer layer (cortex), e.g. of the kidney or adrenal gland.adrenal medulla: see adrenal adj.
ΘΚΠ
the world > life > biology > physical aspects or shapes > specific areas or structures > [noun] > centre
axis1741
medulla1741
1741 A. Monro Anat. Nerves 15 in Anat. Human Bones (ed. 3) The Kidneys..have a reticulated Cortex of Vessels, from which the Eustachian or Bellinian Medulla..proceeds.
1878 J. S. Bristowe Treat. Theory & Pract. Med. (ed. 2) 841 The vessels—and more especially those of the medulla, the Malpighian tufts, and the stellate veins on the surface [of the kidney]—become more or less deeply congested.
1912 E. A. Schäfer Textbk. Microsc. Anat. 400 The ramified cells which cover the reticular tissue of the lymph-sinus often contain a considerable number of pigment-granules, especially in the medulla of the gland.
1963 E. J. W. Barrington Introd. Gen. & Compar. Endocrinol. vi. 152 Germ cells that enter the cortex become female, those that enter the medulla become male.
1991 L. Miller Lett. from Lost Generation 270 Dos Passos had written Hemingway upon hearing of Pauline's sudden death in 1951 from a tumor of the adrenal medulla.
e. The innermost of the three layers of a mammalian hair. Also: the mesodermal tissue that occupies the shaft of a growing feather.
ΘΚΠ
the world > life > the body > hair > parts of hair > [noun]
pithOE
root end1675
shaft1748
medulla1826
stem1845
Henle's layer1850
Henle's sheath1853
epicuticle1949
the world > animals > birds > feather > [noun] > part of
pen1381
quill?a1425
dowlc1535
rib1545
web1575
pilec1600
twill1664
beard1688
pinion1691
vane1713
shaft1748
beardlet1804
medulla1826
barb1835
barbule1835
stem1845
feather-pulp1859
aftershaft1867
barbicel1869
filament1870
vexillum1871
scape1872
rachis1874
harl1877
calamus1878
radius1882
ramus1882
scapus1882
cilia1884
the world > animals > mammals > [noun] > parts of > (part of) hair
clod1678
medulla1826
tat1887
1826 J. C. Prichard Res. Physical Hist. Mankind (ed. 2) I. 136 The pith or medulla [of hair] appears to be endowed with a species of vitality.
1835–6 Todd's Cycl. Anat. & Physiol. I. 353/1 When the quill of the feather has acquired due consistence, the internal medulla becomes dried up.
1845 J. C. Prichard Nat. Hist. Man (ed. 2) 95 Weber declares the human hair to consist of a homogeneous substance, in which no distinction of cortex and medulla can be perceived.
1877 Jrnl. Anthropol. Inst. 6 84 The medulla is not always separate from the cortical substance.
1959 W. Andrew Textbk. Compar. Histol. iv. 130 Histologically a hair usually consists of three main parts: cortex, medulla, and cuticle.
1985 C. R. Leeson et al. Textbk. Histol. (ed. 5) x. 301 The medulla forms the loose central axis and consists of two or three layers of shrunken, cornified cuboidal cells.
1987 E. W. Burr Compan. Bird Med. vi. 34/2 A small rachis with a disproportionately small medulla.
f. Myelin; the myelin sheath of a nerve. Now rare. Perhaps Obsolete.
ΘΚΠ
the world > life > the body > nervous system > nerve > parts of nerves > [noun] > sheath of Schwann
neurilemma1825
medulla1839
myelin1866
sheath of Schwann1874
1839–47 Todd's Cycl. Anat. & Physiol. III. 592/2 The real structure of the primitive nerve fibre appears to be a tube composed of homogeneous membrane, containing a delicate, soft, pulpy, semi-fluid, and transparent medulla.
1872 A. Flint Physiol. Man IV. i. 19 These [nerve] fibres..contain, enclosed in a tubular sheath, a soft substance called the medulla.
1893 Philos. Trans. 1892 (Royal Soc.) B. 183 119 The nerves sometimes lose their medulla a considerable distance before they become connected with nerve-cells.
g. The ventral nerve cord of certain leeches. Now rare. Perhaps Obsolete.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Vermes > [noun] > member of (worm) > nerve cord
medulla1878
1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 167 A median one [sc. sinus]..embraces in Clepsine and Piscicola, the alimentary canal and the ventral medulla.
h. The endoplasm of a protozoan.
ΘΚΠ
the world > animals > invertebrates > protozoa > [noun] > member of > parts of > endosarc
medulla1888
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 833 The protoplasm is either similar throughout, or it is divisible into an exoplasm (cortex) and endoplasm (medulla).
1994 E. E. Ruppert & R. D. Barnes Invertebr. Zool. (ed. 6) ii. 41/1 The body of a heliozoan consists of an outer ectoplasmic sphere, or cortex,..and an inner part of the body, or medulla.
2. Botany.
a. The soft internal tissue of a plant or part of a plant; the pith. Also: the central tissue of the thallus of a lichen or fungus.
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > pith or soft internal tissue
marroweOE
pitheOE
flesh1574
fat1575
pulp1578
medulla1583
brain1601
matrix1633
1583 P. Barrough Methode of Phisicke vi. viii. 288 The playnest and simplest waie of making it [sc. a Bolus], is of medulla, cassiæ fistulæ.
1651 ‘A. B.’ tr. L. Lessius Sir Walter Rawleigh's Ghost 96 In the Medulla or marrow of the Plant there is a genital power or vertue.
1758 J. Adams tr. A. de Ulloa Voy. S.-Amer. I. v. vii. 300 The pod [of the guava], opened longitudinally, is found divided into several cells, each containing a certain spungy medulla.
1830 J. Lindley Introd. Nat. Syst. Bot. 331 In the fruticulose or foliaceous species [of lichens] the medulla is distinctly floccose.
1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi iii. 58 In other forms the rind is distinguished from the medulla by gelatinous cell walls.
1970 Sci. Jrnl. Mar. 35/1 Peltigera polydactyla..had the advantage that the purely fungal part of the lichen (medulla) could be easily dissected away from the part containing the algal layer.
b. = medullin n. Obsolete.
ΘΚΠ
the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > cellulose
medulla1819
cellulose1839
cellulin1843
1819 J. G. Children Ess. Chem. Anal. 298 Medulla was obtained by Dr. John, from the pith of the sunflower.
II. Extended uses.
3. figurative. The essential or central matter of a subject. Also: a compendium, abridgement, or summary. Obsolete.
ΘΚΠ
society > leisure > the arts > literature > prose > non-fiction > summary or epitome > [noun]
abbreviationa1464
summary1509
breve1523
bridgement1523
abbreviate1531
summulary1533
breviary1547
extract1549
digest1555
brief1563
promptuary1577
abbreviature1578
institute1578
breviation1580
breviate1581
compendiary1589
symbol1594
ramass1596
compendium1608
abridgement1609
digestment1610
digestion1613
epitome1623
abridge1634
comprisal1640
comprisurea1641
syntome1641
medulla1644
multum in parvo1653
contracta1657
landscape1656
comprehension1659
sylloge1686
contraction1697
résumé1782
compend1796
sum-up1848
roundup1884
wrap-up1960
1644 J. Milton Doctr. Divorce (ed. 2) To Parl. sig. A4v Their youth run ahead into the easie creek of a System or a Medulla, sayls there at will.
1704 J. Swift Tale of Tub v. 115 An infinite Number of Abstracts, Summaries, Compendiums,..Medulla's..and the like.
1715 R. South 12 Serm. IV. 56 Their preaching Tools, their Medulla's, Notebooks, their Mellificiums, Concordances, and all.
?1764 J. Bush Hibernia Curiosa To Rdr. p. xii The abridgers,..who..engage to furnish you, at a very easy expence, with the medullam of your civil history.
1821 W. Scott Kenilworth I. ix. 233 Now here comes the medulla, the very marrow of my tale.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online June 2022).
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