Ôr'tho-dŏx, a.
a. [Gr. ὀρθόδοξος, from ὀρθός, right, true, and δόξα, opinion, from δοκεῖν, to think; Lat. orthodoxus, Sp. ortodoxo, It. ortodosso, Fr. orthodoxe.]
Sense 1. Sound in the Christian faith; believing the genuine doctrines taught in the Scriptures;—opposed to heretical; as, an orthodox Christian.
Sense 2. According with the doctrines of Scripture; as, an orthodox creed or faith.