‖n.; pl. Zoa [ NL., fr. Gr. zw^, on an animal. ] (Zool.) (a) An animal which is the sole product of a single egg; -- opposed to zooid. H. Spencer. (b) Any one of the perfectly developed individuals of a compound animal. [ 1913 Webster ]

a. [ Gr. zw^, on an animal: cf. F. zoonique. ] Of or pertaining to animals; obtained from animal substances. [ 1913 Webster ]

n. (Zool.) (a) One of the segments of the body of an articulate animal. (b) One of the theoretic transverse divisions of any segmented animal. [ 1913 Webster ]

n. [ Zoo- + Gr. &unr_; a law: cf. F. zoonomie. ] The laws of animal life, or the science which treats of the phenomena of animal life, their causes and relations. [ 1913 Webster ]

n. [ Dim. fr. Gr. zw^, on an animal. ] (Zool.) Same as Zoonite. [ 1913 Webster ]