- pachyderm
- 1838, from Fr. pachyderme (c.1600), adopted as a biological term 1797 by Fr. naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832), from Gk. pachydermos "thick-skinned," from pachys "thick" (from PIE *bhengh-, cf. Skt. bahu- "much") + derma "skin."