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Definition of Trich- (prefix)
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Trich- (prefix): Pertaining to hair. As in trichinosis, a disease due to the parasite Trichinella spiralis which was thought to look like a little spiral hair. From the Greek thrix, trichos, meaning hair. See also: Tricho- (prefix).