Webster's Revised Unabridged Dictionary · 1913

Sivatherium

Sivatherium , noun

[New Latin, from English Siva + Greek {not transcribed} a beast, an animal.]

(Paleontology) A genus of very large extinct ruminants found in the Tertiary formation of India. The snout was prolonged in the form of a proboscis. The male had four horns, the posterior pair being large and branched. It was allied to the antelopes, but very much larger than any existing species.