integral unit

13 LETTERS · STARTS WITH I

integral unit is a valid 13-letter word worth 13 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1G2R1A1L1U1N1I1T1

1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 =13 PTS

DOUBLE WORD → 26TRIPLE WORD → 39

MEANING

What does integral unit mean?