pectiniformadj.

Brit.

/pɛkˈtɪnᵻfɔːm/, U.S.

/pɛkˈtɪnəˌfɔrm/

Forms: 1800s– pecteniform (rare), 1800s– pectiniform.

Origin: Formed within English, by compounding; probably modelled on a Latin lexical item. Etymons: pectini- comb. form, -form comb. form².

Etymology: < pectini- comb. form + -form comb. form², probably after scientific Latin pectiniformis (1819 or earlier).With sense 2 compare earlier pectinate adj.², pectinated adj., pectinal adj.² In form pecteniform perhaps directly < pecten n. + -iform comb. form.

Chiefly Science.

1. Resembling or having the form of a scallop; pectinoid.

ΚΠ

1822 J. Parkinson Outl. Oryctol. 228 Terebratula..multicarinata: large, round, pectiniform, with numerous carinated ribs.

1890 Amer. Naturalist 24 1139 Hinnites is pecteniform in its nealogic stage.

1956 Trans. Edinb. Geol. Soc. 16 272 The surface fauna is restricted to pectiniform lamellibranchs.

1995 Bull. Amer. Mus. Nat. Hist. No. 227. 5 This contribution concludes a general revision of genera of pectiniform bivalves (pectinoids) of the world's marine rocks near the Permo-Triassic boundary.

2. Shaped like a comb; pectinate.

ΚΠ

1829 J. Togno & E. Durand tr. H. Milne-Edwards & P. Vavasseur Man. Materia Medica vi. 154 This salt..crystallizes in pectiniform needles.

1851 S. F. Baird tr. J. G. Heck Iconogr. Encycl. II. Zool. 232 The order Lophobranchii, characterized by having the gills in small tufts instead of being pectiniform, is composed of two families.

1893 New Sydenham Soc. Lexicon Pectiniform septum, the median..connective tissue septum between the two corpora cavernosa of the penis.

1930 J. Townsend tr. G.-H. Luquet Art & Relig. Fossil Man i. 15 (caption) Bison. Wall painting in red and black... On the flank a pectiniform design.

1936 Amer. Naturalist 70 23 In connection with the fur-combing of the pectiniform mandibular teeth of true Lemurs.

1995 Nature 27 Apr. 761/2 The recent reconstructions of some conodont assemblages,..with grasping ramiform..elements and transversally biting pectiniform (‘P’) elements, may fit a ‘rasping tongue’, more or less like that of the extant lampreys and hagfishes.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).

单词	pectiniform
释义	pectiniformadj. Brit. /pɛkˈtɪnᵻfɔːm/, U.S. /pɛkˈtɪnəˌfɔrm/ Forms: 1800s– pecteniform (rare), 1800s– pectiniform. Origin: Formed within English, by compounding; probably modelled on a Latin lexical item. Etymons: pectini- comb. form, -form comb. form². Etymology: < pectini- comb. form + -form comb. form², probably after scientific Latin pectiniformis (1819 or earlier).With sense 2 compare earlier pectinate adj.², pectinated adj., pectinal adj.² In form pecteniform perhaps directly < pecten n. + -iform comb. form. Chiefly Science. 1. Resembling or having the form of a scallop; pectinoid. ΚΠ 1822 J. Parkinson Outl. Oryctol. 228 Terebratula..multicarinata: large, round, pectiniform, with numerous carinated ribs. 1890 Amer. Naturalist 24 1139 Hinnites is pecteniform in its nealogic stage. 1956 Trans. Edinb. Geol. Soc. 16 272 The surface fauna is restricted to pectiniform lamellibranchs. 1995 Bull. Amer. Mus. Nat. Hist. No. 227. 5 This contribution concludes a general revision of genera of pectiniform bivalves (pectinoids) of the world's marine rocks near the Permo-Triassic boundary. 2. Shaped like a comb; pectinate. ΚΠ 1829 J. Togno & E. Durand tr. H. Milne-Edwards & P. Vavasseur Man. Materia Medica vi. 154 This salt..crystallizes in pectiniform needles. 1851 S. F. Baird tr. J. G. Heck Iconogr. Encycl. II. Zool. 232 The order Lophobranchii, characterized by having the gills in small tufts instead of being pectiniform, is composed of two families. 1893 New Sydenham Soc. Lexicon Pectiniform septum, the median..connective tissue septum between the two corpora cavernosa of the penis. 1930 J. Townsend tr. G.-H. Luquet Art & Relig. Fossil Man i. 15 (caption) Bison. Wall painting in red and black... On the flank a pectiniform design. 1936 Amer. Naturalist 70 23 In connection with the fur-combing of the pectiniform mandibular teeth of true Lemurs. 1995 Nature 27 Apr. 761/2 The recent reconstructions of some conodont assemblages,..with grasping ramiform..elements and transversally biting pectiniform (‘P’) elements, may fit a ‘rasping tongue’, more or less like that of the extant lampreys and hagfishes. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < adj.1822
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