principal ideal

15 LETTERS · STARTS WITH P

principal ideal is a valid 15-letter word worth 21 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1I1N1C3I1P3A1L1I1D2E1A1L1

3 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 0 + 1 + 2 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does principal ideal mean?