rectifier tube

14 LETTERS · STARTS WITH R

rectifier tube is a valid 14-letter word worth 20 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1C3T1I1F4I1E1R1T1U1B3E1

1 + 1 + 3 + 1 + 1 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does rectifier tube mean?