religious doctrine

NOUN
18 LETTERS · STARTS WITH R

religious doctrine is a valid 18-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1E1L1I1G2I1O1U1S1D2O1C3T1R1I1N1E1
1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does religious doctrine mean?