Definition from Wiktionary, the free dictionary
- The absence (or loss) of pigmentation in the hair.
1942, Mary Louise Johnson, The physiological effects of egg white in the diet, page 59:
- Severe achromotrichia (graying) and alopecia (loss of hair) were produced in weanling and adult black mice […]
1987, Vitamin Tolerance of Animals, page 67:
- Most pantothenic acid-deficient laboratory animals exhibit dermatitis, achromotrichia, and nasal porphyrin excretion.
2006, Nutrient Requirements of Dogs and Cats, page 231:
- Clinical signs of biotin deficiency include accumulation of salivary, nasal, and lachrymal secretions, progressive alopecia, achromotrichia, dermatitis, body weight loss, and diarrhea in the terminal stages of the deficiency.