as•cid•i•an
We found 4 definitions of ascidian from 4 different sources.
NounPlural: ascidians |
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ascidian - minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves | ||
tunicate, urochordate, urochord primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva | ||
ascidiaceae, class ascidiaceae sometimes classified as an order: sea squirts |