Ascidioidea

Related to Ascidioidea: Thaliacea, Larvacea

As`cid`i`oid´e`a


n. pl.1.(Zool.) A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structure within the oral aperture. The integument is usually leathery in texture. See Illustration in Appendix.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.