[f. Gr. θρίξ, τριχ- hair: see -OLOGY.] The study of the structure, functions, and diseases of the hair. Hence Trichological a., pertaining to or engaged in trichology; Trichologist, one who is versed in trichology.

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1860.  Mayne, Expos. Lex., Trichology, term for the doctrine of the hair.

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1887.  Standard, 28 Oct., 5/3. The Elements of Trichological Science. Ibid. The Trichologists study the physiology and the diseases of the hair.

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1895.  J. J. Raven, Hist. Suffolk, 253. Something may be discoverable by craniology, trichology, odontology.

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1913.  Daily News, 4 Oct., 9. The study of the hair is becoming a science with a national institute of its own—the National Institute of Trichologists.

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