Definition of palaeotherium in English:
palaeotherium
(also paleotherium)
noun ˌpalɪə(ʊ)ˈθɪərɪəmˌpeɪlɪə(ʊ)ˈθɪərɪəm
A fossil ungulate mammal (palaeothere) of the genus Palaeotherium, regarded as an early relative of the horse. Also (in form Palaeotherium): the genus itself.
Origin
Early 19th century. From scientific Latin Palaeotherium, genus name from palaeo- + -therium.