D defs.my
Entry 2 senses Webster, 1913

Ascidium

/(ăs*sĭd"ĭ*ŭm)/ · As·cid·i·um · IPA
01 n. 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 th…
pl. Ascidia ((-ȧ))
  1. 1.
    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).(Bot.)
  2. 2.
    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.(Zool.)