trichologist 1. A specialist in the study of hair structure and diseases. 2. By extension, a hairdresser or hair stylist. Links to other hair-related units: alopec-; barba-; Beards; capillaro-; chaeto-; cirro-; coife; crino-; Hair & Beard Styles; hirsute; pilo-; pogo-; villi-. Found on http://www.wordinfo.info/words/index/info/view_unit/2179/8