Pronunciation: (mul"tē-too-bûr'kyu-lit, -lāt", -tyoo-, mul"tī-),[key] —n. a rodentlike mammal of the extinct order Multituberculata, which lived from the late Jurassic Period to the Oligocene Epoch, reaching the size of a woodchuck and having molars with two or three rows of simple pointed cusps.
—adj. 1. of or pertaining to the multituberculates.
2. having teeth with many simple, pointed cusps.