Search Result for "acanthosis": 
Wordnet 3.0

NOUN (1)

1. an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis); 



WordNet (r) 3.0 (2006):

acanthosis
    n 1: an abnormal but benign thickening of the prickle-cell layer
         of the skin (as in psoriasis)