rectifying valve

NOUN
16 LETTERS · STARTS WITH R

rectifying valve is a valid 16-letter word worth 30 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1E1C3T1I1F4Y4I1N1G2V4A1L1V4E1
1 + 1 + 3 + 1 + 1 + 4 + 4 + 1 + 1 + 2 + 0 + 4 + 1 + 1 + 4 + 1 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does rectifying valve mean?

NOUN · 1 SENSE
1

A thermionic tube having two electrodes; used as a rectifier.