Ascidium
Pronunciation : As*cid"i*um
Part of Speech : n.; pl. Ascidia.
Etymology : [NL., fr. ascus. See Ascus.]
Definition : 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. (Zo?l.)
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.
Source : Webster's Unabridged Dictionary, 1913