pereionn.

Brit.

/pəˈrʌɪən/,

/pəˈriːən/, U.S.

/pəˈraɪˌɑn/,

/pəˈriˌɑn/,

/pəˈreɪˌɑn/

Forms: 1800s– peraeon, 1800s– pereion, 1800s– pereon.

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

Etymology: < scientific Latin pereion (see quot. 1856) < ancient Greek περαιῶν , contracted form of περαιόων , present participle of περαιοῦν to carry across (erroneously taken as ‘to walk about’) < πέρᾱ beyond (see far adv.).

Zoology.

The part of a crustacean between the head and the abdomen, bearing the pereiopods; the crustacean thorax, esp. those thoracic segments that are not fused with the head. Cf. pleon n.¹

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > member of > parts of > thorax

pereion1856

1856 C. Spence Bate in Rep. Brit. Assoc. 1855 27 Thoracic segments, (Pereion, from περαιόω to walk about: pereion, part which supports the walking legs. This and the following [sc. pleon] are suggested instead of the old and incorrect synonyms of thorax, abdomen, &c.).

1883 Science 26 Oct. 572/2 According to either Bate's or Packard's derivation, this [sc. pereion] would be more properly written peraeon, as has sometimes been done, or even pereon.

1961 J. L. Cloudsley-Thompson & J. Sankey Land Invertebr. iv. 55 Philoscia muscorum... Oval in outline, but the base of the pleon is distinctly narrower than the pereion.

1998 Functional Ecol. 12 243/1 Haemolymph was removed..by inserting the needle..dorsally through the arthrodial membrane between pereon segments 2 and 3.

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

单词	pereion
释义	pereionn. Brit. /pəˈrʌɪən/, /pəˈriːən/, U.S. /pəˈraɪˌɑn/, /pəˈriˌɑn/, /pəˈreɪˌɑn/ Forms: 1800s– peraeon, 1800s– pereion, 1800s– pereon. Origin: A borrowing from Latin. Etymon: Latin pereion. Etymology: < scientific Latin pereion (see quot. 1856) < ancient Greek περαιῶν , contracted form of περαιόων , present participle of περαιοῦν to carry across (erroneously taken as ‘to walk about’) < πέρᾱ beyond (see far adv.). Zoology. The part of a crustacean between the head and the abdomen, bearing the pereiopods; the crustacean thorax, esp. those thoracic segments that are not fused with the head. Cf. pleon n.¹ ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > member of > parts of > thorax pereion1856 1856 C. Spence Bate in Rep. Brit. Assoc. 1855 27 Thoracic segments, (Pereion, from περαιόω to walk about: pereion, part which supports the walking legs. This and the following [sc. pleon] are suggested instead of the old and incorrect synonyms of thorax, abdomen, &c.). 1883 Science 26 Oct. 572/2 According to either Bate's or Packard's derivation, this [sc. pereion] would be more properly written peraeon, as has sometimes been done, or even pereon. 1961 J. L. Cloudsley-Thompson & J. Sankey Land Invertebr. iv. 55 Philoscia muscorum... Oval in outline, but the base of the pleon is distinctly narrower than the pereion. 1998 Functional Ecol. 12 243/1 Haemolymph was removed..by inserting the needle..dorsally through the arthrodial membrane between pereon segments 2 and 3. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < n.1856
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