radio wave

NOUN /reɪdi,oʊ_weɪv/
10 LETTERS · 3 SYLLABLES · STARTS WITH R

radio wave is a valid 10-letter word worth 16 points in Scrabble and 17 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1A1D2I1O1W4A1V4E1
1 + 1 + 2 + 1 + 1 + 0 + 4 + 1 + 4 + 1 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does radio wave mean?