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Webster's 1913 Dictionary

ASCIDIOIDEA

As *cid `i *oid "e *a, n. pl. Etym: [NL. , fr. ascidium + -oid. See Ascidium. ] (Zoöl.)

 

Defn: 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.