Note: The spelling 'Orthodox' is also used for meaning 3.
1.
Orthodox beliefs, methods, or systems are ones which are accepted or used by most people.
Many of these ideas are now being incorporated into ~ medical treatment.
= conventional
? un~
ADJ
2.
If you describe someone as ~, you mean that they hold the older and more traditional ideas of their religion or party.
...~ Jews.
...~ communists.
= conservative, traditional
ADJ: usu ADJ n
3.
The Orthodox churches are Christian churches in Eastern Europe which separated from the western church in the eleventh century.
...the Greek Orthodox Church.
ADJ