astronomical refraction

23 LETTERS · STARTS WITH A

astronomical refraction is a valid 23-letter word worth 31 points in Scrabble and 37 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

A1S1T1R1O1N1O1M3I1C3A1L1R1E1F4R1A1C3T1I1O1N1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =31 PTS

DOUBLE WORD → 62TRIPLE WORD → 93

MEANING

What does astronomical refraction mean?