n. [ Gr. &unr_; a wheel + sphere. ] (Zool.) A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end. [ 1913 Webster ]
English-Thai: NECTEC'sLexitron-2 Dictionary [with local updates] NECTEC Lexitron Dictionary EN-TH