[pak-i-durm] /ˈpæk ɪˌdɜrm/
any of the thick-skinned, nonruminant ungulates, as the elephant, hippopotamus, and rhinoceros.
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.
pachyglossia pach·y·glos·si·a (pāk’ĭ-glŏs’ē-ə) n. See macroglossia.
pachygyria pach·y·gy·ri·a (pāk’ĭ-jī’rē-ə) n. Unusually thick convolutions of the cerebral cortex.
pachyleptomeningitis pach·y·lep·to·men·in·gi·tis (pāk’ē-lěp’tō-měn’ĭn-jī’tĭs) n. Inflammation of the membranes of the brain or spinal cord.
/ˌpækɪˌmɛnɪnˈdʒaɪtɪs/ noun 1. (pathol) inflammation of the dura mater of the brain and spinal cord pachymeningitis pach·y·men·in·gi·tis (pāk’ē-měn’ĭn-jī’tĭs) n. A condition in which the dura mater becomes inflamed. Also called perimeningitis.