ascidium (plural ascidia)
- (botany) A pitcher-shaped or flask-shaped organ or appendage of a plant.
- (zoology) One of a genus of simple ascidians, which formerly included most of the known species; sometimes used as a name for the Ascidiidae, or for all the Tunicata.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.