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Webster 1913 Edition
Paleotherium
‖
Paˊle-o-the′ri-um
(pāˊlē̍-ō̍-thē′rĭ-ŭm)
, Noun.
 [NL., fr. Gr. 
παλαιόσ 
ancient + θηρίον 
beast.] (Paleon.) 
An extinct genus of herbivorous Tertiary mammals, once supposed to have resembled the tapir in form, but now known to have had a more slender form, with a long neck like that of a llama. 
[Written also 
Palæotherium
.]