1. a philosophy; a school of thought; a belief system
1. I became interested in comparative religion and started to study Buddhist doctrine.
2. a principle; one of the teachings of a philosophy
2. I have become interested in Buddhism, particularly in its doctrine of compassion.
docere (to show, teach) (Latin)
Doctrine is related to Doctr. We believe whatever the doctr says is right. so doctrine:Belief which is authoratative.