sidereal minute

15 LETTERS · STARTS WITH S

sidereal minute is a valid 15-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1D2E1R1E1A1L1M3I1N1U1T1E1

1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does sidereal minute mean?