say it: AWR-thuh-dahk-see
orthodoxy is a noun meaning "the quality of being orthodox (especially in religion)". It carries 2 recorded senses.
the quality of being orthodox (especially in religion)
religion
a belief or orientation agreeing with conventional standards
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for orthodoxy come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.