opisthosoman.

Brit.

/ə(ʊ)ˌpɪsθəˈsəʊmə/, U.S.

/əˌpɪsθoʊˈsoʊmə/

Origin: A borrowing from Greek, combined with an English element. Etymons: opistho- comb. form, Greek σῶμα.

Etymology: < opistho- comb. form + ancient Greek σῶμα body (see soma n.²). Compare earlier opisthosomal adj.

Zoology.

The posterior section of the body in various invertebrates that have a body divided into two or three distinct sections; esp. (a) the abdomen of a chelicerate arthropod, as an arachnid; (b) the segmented posterior end of the body of a pogonophoran worm, bearing many setae. Cf. prosoma n., metasoma n.

ΘΚΠ

the world > animals > invertebrates > bodies or parts > [noun] > posterior segment

pygidium1846

suranal1906

opisthosoma1935

1935 T. H. Savory Arachnida xiii. 146 The Ixodides possess a soft-skinned opisthosoma capable of great distension necessary for the alternate gorging and fasting.

1953 H. Mellanby Animal Life in Fresh Water (ed. 5) x. 217 The body is divided above into two parts called the prosoma and the abdomen or opisthosoma.

1987 R. D. Barnes Invertebr. Zool. (ed. 5) xvii. 718/1 The opisthosoma and setae [of pogonophorans] probably function in anchoring the body within the tube and aid in burrowing in the bottom ooze.

2002 Jrnl. Morphol. 251 73 In theraphosid spiders, the Malpighian tubules originate from the stercoral pocket in the posterior portion of the opisthosoma.

This is a new entry (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	opisthosoma
释义	opisthosoman. Brit. /ə(ʊ)ˌpɪsθəˈsəʊmə/, U.S. /əˌpɪsθoʊˈsoʊmə/ Origin: A borrowing from Greek, combined with an English element. Etymons: opistho- comb. form, Greek σῶμα. Etymology: < opistho- comb. form + ancient Greek σῶμα body (see soma n.²). Compare earlier opisthosomal adj. Zoology. The posterior section of the body in various invertebrates that have a body divided into two or three distinct sections; esp. (a) the abdomen of a chelicerate arthropod, as an arachnid; (b) the segmented posterior end of the body of a pogonophoran worm, bearing many setae. Cf. prosoma n., metasoma n. ΘΚΠ the world > animals > invertebrates > bodies or parts > [noun] > posterior segment pygidium1846 suranal1906 opisthosoma1935 1935 T. H. Savory Arachnida xiii. 146 The Ixodides possess a soft-skinned opisthosoma capable of great distension necessary for the alternate gorging and fasting. 1953 H. Mellanby Animal Life in Fresh Water (ed. 5) x. 217 The body is divided above into two parts called the prosoma and the abdomen or opisthosoma. 1987 R. D. Barnes Invertebr. Zool. (ed. 5) xvii. 718/1 The opisthosoma and setae [of pogonophorans] probably function in anchoring the body within the tube and aid in burrowing in the bottom ooze. 2002 Jrnl. Morphol. 251 73 In theraphosid spiders, the Malpighian tubules originate from the stercoral pocket in the posterior portion of the opisthosoma. This is a new entry (OED Third Edition, June 2004; most recently modified version published online March 2022). < n.1935
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