noun, plural or·tho·dox·ies for 1.
- orthodox belief or practice.
- orthodox character.
noun plural -doxies
- orthodox belief or practice
- the quality of being orthodox
n.1704, from unorthodox + -y (1). n.1620s, from French orthodoxie and directly from Late Latin orthodoxia, from late Greek orthodoxia “right opinion,” noun of quality from orthodoxos (see orthodox).