Pachydermata


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Pach`y`der´ma`ta

    (păk`ĭ`dẽr´må`tå)
n. pl.1.(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.