Bot. a pitcherlike leaf or structure, as of the pitcher plant or bladderwort
Origin of ascidiumModern Latin ; from Classical Greek askidion, diminutive of askos: see asco-
nounpl. as·cid·i·a Botany
A pitcher-shaped or bottle-shaped part or organ, such as the hollow tubular leaf of a pitcher plant.
Origin of ascidiumNew Latin, from Greek askidion, diminutive of askos, wineskin.
New Latin, from ascus