Category:Ascidium

As*cid"i*um, n.; pl. Ascidia. Etym: [NL., fr. ascus. See Ascus.]

1. (Bot.)

Defn: A pitcher-shaped, or flask-shaped, organ or appendage of a plant, as the leaves of the pitcher plant, or the little bladderlike traps of the bladderwort (Utricularia).

2. pl. (Zoöl.)

Defn: A genus of simple ascidians, which formerly included most of the known species. It is sometimes used as a name for the Ascidioidea, or for all the Tunicata.