DOCTRINE meaning: 1. a belief or set of beliefs, especially political or religious ones, that are taught and accepted…. Learn more. Doctrine (from Latin: doctrina, meaning 'teaching, instruction') is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the essence of teachings in a given branch of knowledge or in a belief system. Learn the meaning of doctrine as a set of principles or beliefs, especially religious ones, or a statement of official government policy. See synonyms, pronunciation, and usage examples of doctrine in British and American English. Doctrine definition: a particular principle, position, or policy taught or advocated, as of a religion or government.. See examples of DOCTRINE used in a sentence.