pleuroconchn.adj.

Brit.

/ˈplʊərə(ʊ)kɒn(t)ʃ/,

/ˈplʊərə(ʊ)kɒŋk/, U.S.

/ˈplʊroʊˌkɑntʃ/,

/ˈplʊroʊˌkɑŋk/; see also pleuro- comb. form

Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: pleuro- comb. form, conch n.

Etymology: < pleuro- comb. form + conch n., after French pleuroconque ( A. d'Orbigny Paléontologie française: Terrains crétacés (1845) III. 465; > scientific Latin Pleuroconchae, former division name).

Zoology.

A bivalve mollusc having valves of unequal size; (formerly) spec. †a member of the former division Pleuroconchae of molluscs so characterized (obsolete). Also as adj.

ΚΠ

1863 J. D. Dana Man. Geol. 500 Of the integripallial Mesozoic species, one half were Pleuroconchs (species having unequal valves).

1958 J. E. Morton Molluscs x. 194 In the Pandoridae and Myochamidae the valves show the asymmetrical pleuroconch condition, with a deeply convex right valve and a flatter left one.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	pleuroconch
释义	pleuroconchn.adj. Brit. /ˈplʊərə(ʊ)kɒn(t)ʃ/, /ˈplʊərə(ʊ)kɒŋk/, U.S. /ˈplʊroʊˌkɑntʃ/, /ˈplʊroʊˌkɑŋk/; see also pleuro- comb. form Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: pleuro- comb. form, conch n. Etymology: < pleuro- comb. form + conch n., after French pleuroconque ( A. d'Orbigny Paléontologie française: Terrains crétacés (1845) III. 465; > scientific Latin Pleuroconchae, former division name). Zoology. A bivalve mollusc having valves of unequal size; (formerly) spec. †a member of the former division Pleuroconchae of molluscs so characterized (obsolete). Also as adj. ΚΠ 1863 J. D. Dana Man. Geol. 500 Of the integripallial Mesozoic species, one half were Pleuroconchs (species having unequal valves). 1958 J. E. Morton Molluscs x. 194 In the Pandoridae and Myochamidae the valves show the asymmetrical pleuroconch condition, with a deeply convex right valve and a flatter left one. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.adj.1863
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