- The quality or state of being orthodox.
- Orthodox practice, custom, or belief.
- The beliefs and practices of the Eastern Orthodox Church.
- Orthodox Judaism.
- The character of being orthodox; correctness of opinion; soundness of doctrine, especially in theology; specifically, in <em>theology</em>, conformity to the faith of the Church Catholic, as represented in its primitive ecumenical creeds, or to the Greek Church, called <internalXref urlencoded="Orthodox">Orthodox</internalXref>.
- Soundness of faith; a belief in the doctrines taught in the Scriptures, or in some established standard of faith; -- opposed to <ant>heterodoxy</ant> or to <ant>heresy</ant>.
- Consonance to genuine Scriptural doctrines; -- said of moral doctrines and beliefs.
- By extension, said of any generally accepted doctrine or belief; the orthodox practice or belief.
- Correctness in doctrine and belief.
- <xref>Conformity</xref> to <xref>established</xref> and <xref>accepted</xref> beliefs (usually of religions).
- a belief or orientation agreeing with conventional standards
- the quality of being orthodox (especially in religion)