PACHYDERMATOUS Meaning of PACHYDERMATOUS in English [pachy.der.ma.tous] adj [ultim. fr. Gk pachys + dermat-, derma skin] (1823) 1: of or relating to the pachyderms 2. a: thick, thickened "~ skin" b: callous, insensitive Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012