Entry 1 sense Webster, 1913 Zoëa · Zo·ë·a · IPA /zoʊˈi.ə/ 01 n. A peculiar larval stage of certain decapod Crustacea, especially of crabs and certain Anomura. 1. A peculiar larval stage of certain decapod Crustacea, especially of crabs and certain Anomura.(Zool.)