Webster’s Revised Unabridged Dictionary · 1913
Dinoceras
Di·noc′e·ras, n. [NL., fr. Gr. δεινός terrible + κέρας, -ατος, horn.] (Paleon.) A genus of large extinct Eocene mammals from Wyoming; — called also Uintatherium. See Illustration in Appendix.
☞ They were herbivorous, and remarkable for three pairs of hornlike protuberances on the skull. The males were armed with a pair of powerful canine tusks.