metasoman.

Brit.

/ˌmɛtəˈsəʊmə/, U.S.

/ˌmɛdəˈsoʊmə/

Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek σῶμα.

Etymology: < meta- prefix + ancient Greek σῶμα (see soma n.²). Compare slightly later metasome n., and also mesosoma n. and prosoma n.

Zoology.

The posterior section of the body in various invertebrates that have a body divided into two or three distinct sections (e.g. arachnids, cephalopods, hemichordates, lophophorates, etc.); (Entomology) the broad or swollen part of the abdomen behind the petiole of many hymenoptera. Cf. mesosome n. 1, prosoma n.

ΚΠ

1872 H. A. Nicholson Man. Palæontol. 272 The body in the Cephalopoda is symmetrical..there is a tolerably distinct separation..into an anterior cephalic portion (prosoma) and a posterior portion, enveloped in the mantle..(metasoma).

1877 T. H. Huxley Man. Anat. Invertebrated Animals 475 The part which lies behind the foot and contains the posterior adductor may be termed the metasoma.

1893 A. E. Shipley Zool. Invertebr. 398 The heart..is continued backward in the scorpion as a posterior aorta which traverses the metasoma.

1946 H. Woods Palæontol. Invertebr. (ed. 8) 427 The posterior portion of the body is the metasoma or post-abdomen.

1968 Ecology 49 732/1 The scorpion initiated a defensive behavior in which the scorpion stilted on its walking legs with mesosoma and metasoma arched in almost a vertical position.

1996 Ecol. Monogr. 66 248 The hind legs embrace several flowers and guide them under the metasoma.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metasoma
释义	metasoman. Brit. /ˌmɛtəˈsəʊmə/, U.S. /ˌmɛdəˈsoʊmə/ Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek σῶμα. Etymology: < meta- prefix + ancient Greek σῶμα (see soma n.²). Compare slightly later metasome n., and also mesosoma n. and prosoma n. Zoology. The posterior section of the body in various invertebrates that have a body divided into two or three distinct sections (e.g. arachnids, cephalopods, hemichordates, lophophorates, etc.); (Entomology) the broad or swollen part of the abdomen behind the petiole of many hymenoptera. Cf. mesosome n. 1, prosoma n. ΚΠ 1872 H. A. Nicholson Man. Palæontol. 272 The body in the Cephalopoda is symmetrical..there is a tolerably distinct separation..into an anterior cephalic portion (prosoma) and a posterior portion, enveloped in the mantle..(metasoma). 1877 T. H. Huxley Man. Anat. Invertebrated Animals 475 The part which lies behind the foot and contains the posterior adductor may be termed the metasoma. 1893 A. E. Shipley Zool. Invertebr. 398 The heart..is continued backward in the scorpion as a posterior aorta which traverses the metasoma. 1946 H. Woods Palæontol. Invertebr. (ed. 8) 427 The posterior portion of the body is the metasoma or post-abdomen. 1968 Ecology 49 732/1 The scorpion initiated a defensive behavior in which the scorpion stilted on its walking legs with mesosoma and metasoma arched in almost a vertical position. 1996 Ecol. Monogr. 66 248 The hind legs embrace several flowers and guide them under the metasoma. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1872
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