adjective.
Characterized by, belonging to, or concerning doctrine.
The Century Dictionary and Cyclopedia
Pertaining to doctrine; consisting of or characterized by doctrine; relating or pertaining to fundamental belief or instruction: as, doctrinal theology; doctrinal soundness in religion, science, or politics; a doctrinal controversy.
Serving for instruction or guidance; having the office or effect of teaching.
noun.
Something that is a part of doctrine; a tenet or article of belief.
the GNU version of the Collaborative International Dictionary of English
adjective.
Pertaining to, or containing, doctrine or something taught and to be believed.
adjective.
Pertaining to, or having to do with, teaching.
noun.
A matter of doctrine; also, a system of doctrines.