hexapod, thexapode

& s. [Gr. hex = six, and pous, podos =a foot.] A. As adj .: Having six legs. (Used of insects.) B. As subst.: A typical insect. If the Myriapod a are excluded from the insect cla , then all the latter are hexapods. hex-a-prot-o-don, s. [Gr. hex=six; protos = first, and odous (gen it, odontos ) =a tooth.] Palæont .: A sub-genus of Hippopotamus, or a genus of Hippo pot amide, from the Upper Miocene of the Siwalik Hills in India. It is the earliest known form of the family, and differs from the typical species of hippopotamus by having six lower incisors in place of four.