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Webster 1913 Edition
Pachydermata
‖
Pachˊy-der′ma-ta
(păkˊĭ-dẽr′mȧ-tȧ)
, Noun.
pl.
[NL., fr. Gr.
παχύδερμοσ
thick-skinned; παχύσ
thick + δέρμα
skin.] (Zool.)
A group of hoofed mammals distinguished for the thickness of their skins, including the elephant, hippopotamus, rhinoceros, tapir, horse, and hog; the pachyderms. It is now considered an artificial group.