/ ˈɔːθədɒks; NAmE ˈɔːrθədɑːks/ adjective
1.
( especially of beliefs or behaviour ) generally accepted or approved of; following generally accepted beliefs
SYN traditional :
orthodox medicine
OPP unorthodox
—compare heterodox
2.
following closely the traditional beliefs and practices of a religion :
an orthodox Jew
3.
Orthodox belonging to or connected with the Orthodox Church
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WORD ORIGIN
late Middle English : from Greek orthodoxos (probably via ecclesiastical Latin ), from orthos straight or right + doxa opinion.