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.
Origin
Early 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.
- well-havened
- well head
- well-headed
- well-hearted
- well-heated
- well heeled
- well-hewn
- well-hinged
- well-hoarded
- well hole
- well hook
- well-horned
- well-horsed
- well house
- well-housed
- well-hued
- well-humored
- well-humoured
- well hung
- well-husbanded
- well, I declare
- wellie
- well I'll be (or I'm) damned
- well, I'll be (or I'm) jiggered
- head someone/thing off