English dictionary
ascidioidea
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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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 <i>Illustration</i> in Appendix.
Source: webster1913