optical crown

NOUN
13 LETTERS · 3 SYLLABLES · STARTS WITH O

optical crown is a valid 13-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
O1P3T1I1C3A1L1C3R1O1W4N1
1 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 1 + 4 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does optical crown mean?

NOUN · 1 SENSE
1

Optical glass of low dispersion and low refractive index.