Entry 1 sense Webster, 1913 Ascidiozooid /(ăs*sĭd`ĭ*ō̇*zō"oid)/ · As·cid·i·o·zo·oid · IPA 01 n. One of the individual members of a compound ascidian. See Ascidioidea. 1. One of the individual members of a compound ascidian. See Ascidioidea.(Zool.) See: Ascidioidea