IPA: /ˌɛkjʊˈmɛnɪkəl/
KK: /ˌɛkjuˈmɛnɪkəl/
Related to promoting unity among different churches or religions, or having a universal scope.
The ecumenical movement aims to bring together various Christian denominations.
Ecumenical → It is formed from "oikoumene" (Greek, meaning the inhabited world) and the suffix "-ical" (meaning pertaining to). The word "ecumenical" refers to something that pertains to the whole inhabited world, especially in a religious context, promoting unity among different Christian denominations.
Think of the Greek word for the 'inhabited world' — that's what ecumenical means, relating to all people and promoting unity.