optical altimeter

17 LETTERS · STARTS WITH O

optical altimeter is a valid 17-letter word worth 22 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

O1P3T1I1C3A1L1A1L1T1I1M3E1T1E1R1

1 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does optical altimeter mean?