glossotrichia 1. A hairy tongue which is a benign side effect of some antibiotics; dark overgrowth of the papillae of the tongue. 2. A benign hairy condition of the tongue characterized by hypertrophy of the filiform papillae, giving the dorsum of the tongue a furry appearance. The color of the elongated papillae varies from yellowish white to br... Found on http://www.wordinfo.info/words/index/info/view_unit/2179/2