philosophical doctrine

NOUN
22 LETTERS · STARTS WITH P

philosophical doctrine is a valid 22-letter word worth 36 points in Scrabble and 41 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3H4I1L1O1S1O1P3H4I1C3A1L1D2O1C3T1R1I1N1E1
3 + 4 + 1 + 1 + 1 + 1 + 1 + 3 + 4 + 1 + 3 + 1 + 1 + 0 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =36 PTS
DOUBLE WORD → 72TRIPLE WORD → 108
MEANING

What does philosophical doctrine mean?