perissodactyl a

pl. [Gr. peri odaktylos =having a superfluous number of fingers or toes: peri os superabundant, and daktylos =a finger or toe.] 1. Zool .: In Owen's cla ification a section of Ungulata. The hind feet are odd-toed in all, and the fore feet in all but the Tapiride and the Bronto. the ride. Dorsolumbar vertebræ never le than twenty-three. Femur with a third trochanter. Horns, if present, not paired, except in the extinct Diceratherium. Usually there is but one horn; if two are present, they are in the median line of the them, as a fluid may be driven along a tube by squeezing it. The motion is most obvious in the small intestine. per-I-stăl'-tic-al-ly, adv. [English peristaltic; -al, -ly.] In a peristaltic manner.