a. 1. (Zool.) Destitute of wings; apteral; as, apterous insects. [ 1913 Webster ]
2. (Bot.) Destitute of winglike membranous expansions, as a stem or petiole; -- opposed to alate. [ 1913 Webster ]
a. [ Hexa- + Gr. &unr_; wing. ] (Bot.) Having six processes. Gray.
a. [ Gr. &unr_;; te`tra- (see Tetra-) + &unr_; wing. ] (Zool.) Having four wings. [ 1913 Webster ]