/ ˈdɒktrɪn; NAmE ˈdɑːk-/ noun
1.
[ C , U ] a belief or set of beliefs held and taught by a Church, a political party, etc. :
the doctrine of parliamentary sovereignty
Christian doctrine
2.
Doctrine [ C ] ( US ) a statement of government policy :
the Monroe Doctrine
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WORD ORIGIN
late Middle English : from Old French , from Latin doctrina teaching, learning, from doctor teacher, from docere teach.