resonance radiation

19 LETTERS · STARTS WITH R

resonance radiation is a valid 19-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1S1O1N1A1N1C3E1R1A1D2I1A1T1I1O1N1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 0 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does resonance radiation mean?