\Her*biv"o*ra\, n. pl. [NL., fr. L. herba herb +
vorare to devour.] (Zo["o]l.)
An extensive division of Mammalia. It formerly included the
Proboscidea, Hyracoidea, Perissodactyla, and Artiodactyla,
but by later writers it is generally restricted to the two
latter groups (Ungulata). They feed almost exclusively upon
vegetation.