tergumn.

/ˈtəːɡəm/

Forms: Plural terga.

Etymology: Latin tergum back.

In special scientific uses (synonymous with dorsum n.).

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1. The back, or upper surface or portion, of an arthropod or other articulated animal; more usually, the upper plate of each somite or segment of such an animal (= tergite n.): opposed to sternum.

1826 W. Kirby & W. Spence Introd. Entomol. III. 387 Tergum, the upper or supine surface of the abdomen.

1880 T. H. Huxley Crayfish iii. 96 Each ring [of the abdomen] consists of a dorsal, arched portion, called the tergum [etc.].

2. Each of the two upper plates of the shell in cirripeds.

ΚΠ

1851 C. Darwin Monogr. Cirripedia (Palæont. Soc.) Introd. 2 In almost all the Lepadidæ the Terga (i.e. the upper or posterior lateral valves) are not characteristic.

This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2021).

单词	tergum
释义	tergumn. /ˈtəːɡəm/ Forms: Plural terga. Etymology: Latin tergum back. In special scientific uses (synonymous with dorsum n.). Thesaurus » Categories » 1. The back, or upper surface or portion, of an arthropod or other articulated animal; more usually, the upper plate of each somite or segment of such an animal (= tergite n.): opposed to sternum. 1826 W. Kirby & W. Spence Introd. Entomol. III. 387 Tergum, the upper or supine surface of the abdomen. 1880 T. H. Huxley Crayfish iii. 96 Each ring [of the abdomen] consists of a dorsal, arched portion, called the tergum [etc.]. 2. Each of the two upper plates of the shell in cirripeds. ΚΠ 1851 C. Darwin Monogr. Cirripedia (Palæont. Soc.) Introd. 2 In almost all the Lepadidæ the Terga (i.e. the upper or posterior lateral valves) are not characteristic. This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2021). < n.1826
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