† pachytrichousadj. [compare ancient Greek παχύτριχ-, παχύθριξ] Obsoleterare having thick hairs, having thick hyphae or hairs ( N.E.D. (1904) gives the pronunciation of the second element as (-i·trikəs) /-ˈɪtrɪkəs/).Apparently only attested in dictionaries or glossaries.
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1857 R. G. MayneExpos. Lexicon Med. Sci. (1860) Pachytrichus, having thick hair, as the Myzotrichum pachytrichum: pachytrichous.