gravity-assist

NOUN
14 LETTERS · STARTS WITH G

gravity-assist is a valid 14-letter word worth 20 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2R1A1V4I1T1Y4-0A1S1S1I1S1T1
2 + 1 + 1 + 4 + 1 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does gravity-assist mean?

NOUN · 1 SENSE
1

(spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its gravitational field.