Echiuran.

Brit.

/ɛkᵻˈjʊərə/, U.S.

/ˌɛkiˈjʊrə/

Origin: A borrowing from Latin. Etymon: Latin Echiura.

Etymology: < scientific Latin Echiura (see quot. 1968) < Echiurus , genus name ( F. E. Guérin-Méneville Iconogr. du Règne Animal de G. Cuvier (1829–43 ) III. 244, after earlier echiurus , specific name ( P. S. Pallas Miscellanea Zoologica (1766) 146); < ancient Greek ἔχις viper (see echites n.) + οὐρά tail: see uro- comb. form²) + -a -a suffix², after Echiuroidea (see echiuroid n.).

Zoology.

With plural agreement: a small phylum of unsegmented marine invertebrates comprising the spoonworms, which are characterized by a sausage-shaped body with two or more hooked chaetae and a mobile, non-retractile ribbon-like proboscis. Also: animals of this phylum (collectively or individually); spoonworms.Formerly called Echiuroidea or Echiurida, and once regarded as an order of gephyrean worms, the echiura are now sometimes placed as a class of the phylum Annelida.

ΚΠ

1968 M. Florkin & B. T. Scheer Chem. Zool. II. p. xvii Contents of Other Volumes..Volume IV: Annelida, Echiura, Sipuncula.

1989 Trans. Amer. Miscosc. Soc. 108 330 The type of cuticle described here..also occurs in annelid-related phyla; e.g., Echiura, Sipuncula.., Entoprocta, Nematomorpha.., and Pogonophora.

2001 G. W. Rouse & F. Pleijel Polychaetes ii. 9/1 The results..suggest that chaetae could have evolved twice, one in Echiura and once in Annelida.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	echiura
释义	Echiuran. Brit. /ɛkᵻˈjʊərə/, U.S. /ˌɛkiˈjʊrə/ Origin: A borrowing from Latin. Etymon: Latin Echiura. Etymology: < scientific Latin Echiura (see quot. 1968) < Echiurus , genus name ( F. E. Guérin-Méneville Iconogr. du Règne Animal de G. Cuvier (1829–43 ) III. 244, after earlier echiurus , specific name ( P. S. Pallas Miscellanea Zoologica (1766) 146); < ancient Greek ἔχις viper (see echites n.) + οὐρά tail: see uro- comb. form²) + -a -a suffix², after Echiuroidea (see echiuroid n.). Zoology. With plural agreement: a small phylum of unsegmented marine invertebrates comprising the spoonworms, which are characterized by a sausage-shaped body with two or more hooked chaetae and a mobile, non-retractile ribbon-like proboscis. Also: animals of this phylum (collectively or individually); spoonworms.Formerly called Echiuroidea or Echiurida, and once regarded as an order of gephyrean worms, the echiura are now sometimes placed as a class of the phylum Annelida. ΚΠ 1968 M. Florkin & B. T. Scheer Chem. Zool. II. p. xvii Contents of Other Volumes..Volume IV: Annelida, Echiura, Sipuncula. 1989 Trans. Amer. Miscosc. Soc. 108 330 The type of cuticle described here..also occurs in annelid-related phyla; e.g., Echiura, Sipuncula.., Entoprocta, Nematomorpha.., and Pogonophora. 2001 G. W. Rouse & F. Pleijel Polychaetes ii. 9/1 The results..suggest that chaetae could have evolved twice, one in Echiura and once in Annelida. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1968
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