optical instrument

NOUN /ɑptɪkəl_'ɪnstrəmənt/
18 LETTERS · STARTS WITH O

optical instrument is a valid 18-letter word worth 23 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
O1P3T1I1C3A1L1I1N1S1T1R1U1M3E1N1T1
1 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does optical instrument mean?

NOUN · 1 SENSE