/ ˈɔːθədɒksi; NAmE ˈɔːrθədɑːksi/ noun ( pl. -ies )
1.
[ C , U ] ( formal ) an idea or view that is generally accepted :
an economist arguing against the current financial orthodoxy
2.
[ U , C , usually pl. ] the traditional beliefs or practices of a religion, etc.
3.
Orthodoxy [ U ] the Orthodox Church, its beliefs and practices
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WORD ORIGIN
mid 17th cent.: via late Latin from late Greek orthodoxia sound doctrine, from orthodoxos (probably via ecclesiastical Latin ), from orthos straight or right + doxa opinion.