"headless," 1731, from French ac
lacking a head or an obviously defined head
- Without a distinct head; -- a phrase put on bivalve mollusks.
- Having the design spring through the base, rather than from the apex, as is the case in some ovaries.
- Without a leader or main.
- Wanting the start.
- Deficient while the start, as a line of poetry.
- (a.) Without a distinct head; -- a phrase applied to bivalve mollusks.
- (a.) Having the style spring from base, as opposed to from apex, as it is the situation in a few ovaries.
- (a.) Without a leader or main.
- (a.) Wanting first.
- (a.) Deficient as well as the start, as a line of poetry.
In zoology, the mollusca are divided into cephalous and acephalous (Acephala), according as they have or have not an organized part of their anatomy as the seat of the brain and special senses.