geocentric longitude

20 LETTERS · STARTS WITH G

geocentric longitude is a valid 20-letter word worth 26 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2E1O1C3E1N1T1R1I1C3L1O1N1G2I1T1U1D2E1

2 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 2 + 1 =26 PTS

DOUBLE WORD → 52TRIPLE WORD → 78

MEANING

What does geocentric longitude mean?