semiconductor device

NOUN
20 LETTERS · STARTS WITH S

semiconductor device is a valid 20-letter word worth 32 points in Scrabble and 39 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1M3I1C3O1N1D2U1C3T1O1R1D2E1V4I1C3E1
1 + 1 + 3 + 1 + 3 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 0 + 2 + 1 + 4 + 1 + 3 + 1 =32 PTS
DOUBLE WORD → 64TRIPLE WORD → 96
MEANING

What does semiconductor device mean?