acanthosis nigricans(n = noun.state) keratosis nigricans - a skin disease characterized by dark wartlike patches in the body folds; can be benign or malignant;
is a kind of disease of the skin, skin disease, skin disorder

acanthosis, hirundo nigricans, hypentelium nigricans, keratosis nigricans, makaira nigricans, rhizopus nigricans