interreflection

NOUN
15 LETTERS · 5 SYLLABLES · STARTS WITH I

interreflection is a valid 15-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1T1E1R1R1E1F4L1E1C3T1I1O1N1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does interreflection mean?

NOUN · 1 SENSE
1

Reciprocal reflection between two reflecting surfaces.

“there was interreflection between the two surfaces of the lens”