单词 | Acephala |
释义 | Acephala/(ˌ)eɪˈsɛfələ/ /(ˌ)eɪˈsɛf(ə)lə/ /(ˌ)eɪˈkɛfələ/Zoology. Now historical noun Treated as plural. A former class of invertebrates lacking distinct heads, broadly equivalent to Bivalvia (bivalve molluscs) but also including tunicates; (also in form acephala) invertebrates of this class collectively. Occasionally with singular concord (also in form acephala): an invertebrate of this class. OriginEarly 19th century. From scientific Latin Acephala, plural noun, use as noun of post-classical Latin acephalus, after French acéphales, plural noun; compare scientific Latin -a. |
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