[pak-i-durm] /ˈpæk ɪˌdɜrm/

any of the thick-skinned, nonruminant ungulates, as the elephant, hippopotamus, and rhinoceros.
an elephant.
a person who is not sensitive to criticism, ridicule, etc.; a thick-skinned person.
any very large thick-skinned mammal, such as an elephant, rhinoceros, or hippopotamus

1838, from French pachyderme (c.1600), adopted as a biological term 1797 by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832), from Greek pachydermos “thick-skinned,” from pachys “thick, large, massive,” from PIE *bhengh- “thick, fat” (cf. Sanskrit bahu- “much, numerous” Avestan bazah- “height, depth,” Hittite pankush “large,” Old Norse bingr “heap,” Old High German bungo “a bulb,” Lithuanian biess “thick”) + derma “skin” (see derma).
Any of various large, thick-skinned mammals, such as the elephant, rhinoceros, or hippopotamus.


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