chromatic semitone

18 LETTERS · STARTS WITH C

chromatic semitone is a valid 18-letter word worth 28 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3H4R1O1M3A1T1I1C3S1E1M3I1T1O1N1E1

3 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 3 + 0 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does chromatic semitone mean?