concentrate upon

16 LETTERS · STARTS WITH C

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

SCRABBLE WORDS WITH FRIENDS

C3O1N1C3E1N1T1R1A1T1E1U1P3O1N1

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

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does concentrate upon mean?