transmission grating

20 LETTERS · STARTS WITH T

transmission grating is a valid 20-letter word worth 23 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1R1A1N1S1M3I1S1S1I1O1N1G2R1A1T1I1N1G2

1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 2 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does transmission grating mean?