upsilon particle

16 LETTERS · STARTS WITH U

upsilon particle is a valid 16-letter word worth 21 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

U1P3S1I1L1O1N1P3A1R1T1I1C3L1E1

1 + 3 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does upsilon particle mean?