one of several Ascidioidea or in a far more general feeling one of several Tunicata additionally as an adj
- moment inactive marine invertebrate having a saclike body with siphons whereby water enters and leaves
- one of many Ascidioidea, or in a far more basic sense, one of this Tunicata. In addition as an adj.
(n.) The Ascidioidea, or in a far more basic sense, the Tunicata. Also as an adj.
Sphaerothylacus polycarpus (Sluiter, 1884) has an ascidian for its host.