英语词汇“proctodeum”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

proctodeum

/ˌprɒktə(ʊ)ˈdiːəm/

(also proctodaeum) Zoology and Embryology

noun

The posterior portion of the alimentary canal, especially in an embryo (in which it occurs as an invagination of the epiblast or ectoderm); specifically the hindgut of an insect or other arthropod.

Origin

Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From procto- + ancient Greek ὁδαῖος that is on or by the road (in ancient Greek only in ὁδαῖα freight, merchandise; in Byzantine Greek designating the god Hermes, to whom statues were set up by the roadside; from ὁδός way + -αῖος, suffix forming adjectives) + -um, after Latin nouns in -um; compare quot. 1876.

单词	proctodeum
释义	proctodeum /ˌprɒktə(ʊ)ˈdiːəm/ (also proctodaeum) Zoology and Embryology noun The posterior portion of the alimentary canal, especially in an embryo (in which it occurs as an invagination of the epiblast or ectoderm); specifically the hindgut of an insect or other arthropod. Origin Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From procto- + ancient Greek ὁδαῖος that is on or by the road (in ancient Greek only in ὁδαῖα freight, merchandise; in Byzantine Greek designating the god Hermes, to whom statues were set up by the roadside; from ὁδός way + -αῖος, suffix forming adjectives) + -um, after Latin nouns in -um; compare quot. 1876.
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