improper integral

17 LETTERS · STARTS WITH I

improper integral is a valid 17-letter word worth 23 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1M3P3R1O1P3E1R1I1N1T1E1G2R1A1L1

1 + 3 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does improper integral mean?