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Webster 1913 Edition
Acephala
‖
A-ceph′a-la
,Noun.
pl.
[NL., fr. Gr. [GREEK], adj. neut. pl., headless. See
Acephal
.] (Zool.)
That division of the Mollusca which includes the bivalve shells, like the clams and oysters; – so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See
Mollusca
. Definition 2024
Acephala
Acephala
See also: acephala
Translingual
Proper noun
Acephala
- (obsolete) A taxonomic class within the phylum Mollusca – the Bivalvia.
- 1854, Philip Henry Gosse, Natural History, page 57:
- Naturalists arrange the Mollusca in six classes, named Cephalopoda, Pteropoda, Gasteropoda, Conchifera, Brachiopoda, and Tunicata. Of these the first three are sometimes distinguished as Encephala, or furnished with a head; the last three as Acephala, being destitute of that organ.
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- A group or variety of Brassica oleracea, including kale and collard greens