keratosis

NOUN /,kɛrə'toʊsɪs/
9 LETTERS · 4 SYLLABLES · STARTS WITH K

keratosis is a valid 9-letter word worth 13 points in Scrabble and 13 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
K5E1R1A1T1O1S1I1S1
5 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =13 PTS
DOUBLE WORD → 26TRIPLE WORD → 39
MEANING

What does keratosis mean?