PERISSODACTYL

[pe.ris.so.dac.tyl] n [NL Perissodactyla, fr. Gk perissos excessive, odd in number + daktylos finger, toe] (1849): any of an order (Perissodactyla) of nonruminant ungulate mammals (as a horse, a tapir, or a rhinoceros) that usu. have an odd number of toes, molar teeth with transverse ridges on the grinding surface, and the posterior premolars resembling true molars -- perissodactyl adj