[ 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.

Origin of pachyderm

1830–40; < New Latin Pachyderma, assumed singular of Pachydermata (plural) obsolete order name < Greek pachý(s) thick + -dérmata, neuter plural of -dermatos -skinned, adj. derivative of dermat-, stem of dérma skin, derma1


pach·y·der·mal, pach·y·der·mous, pach·y·der·mic, pach·y·der·moid, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for pachydermous

  • It was impossible to score an advantage over his stolid strength and pachydermous insensibility.

    The Fighting Edge|William MacLeod Raine
  • The unicorn of holy writ would appear rather to be a pachydermous creature, of great strength and formidable ferocity.

British Dictionary definitions for pachydermous

/ (ˈpækɪˌdɜːm) /


any very large thick-skinned mammal, such as an elephant, rhinoceros, or hippopotamus

Derived forms of pachyderm

pachydermatous, adjective

Word Origin for pachyderm

C19: from French pachyderme, from Greek pakhudermos thick-skinned, from pakhus thick + derma skin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for pachydermous

[ păkĭ-dûrm′ ]

Any of various large, thick-skinned mammals, such as the elephant, rhinoceros, or hippopotamus.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.