Source : Webster's Revised Unabridged Dictionary (1913)

Dicynodont \Di*cyn"o*dont\, n. [Gr. di- = di`s- twice + ? dog +
   ?, ?, tooth.] (Paleon.)
   One of a group of extinct reptiles having the jaws armed with
   a horny beak, as in turtles, and in the genus {Dicynodon},
   supporting also a pair of powerful tusks. Their remains are
   found in triassic strata of South Africa and India.

Source : WordNet®

dicynodont
     n : a kind of therapsid