critical angle

NOUN /krɪtɪkəl_'æŋɡəl/
14 LETTERS · 4 SYLLABLES · STARTS WITH C

critical angle is a valid 14-letter word worth 18 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3R1I1T1I1C3A1L1A1N1G2L1E1
3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 2 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does critical angle mean?

NOUN · 1 SENSE
1

The smallest angle of incidence for which light is totally reflected.