(ˈ)dī|sinəˌdän, -|sīn- noun
Usage: capitalized
Etymology: New Latin, from di- + cyn- + -odon
: a genus of heavily built small to moderately large Permian reptiles (order Therapsida) that were presumably herbivorous and semiaquatic or marsh-dwelling forms and that had the teeth reduced to a pair of large canines in the male only and the jaws covered by a horny beak