ðɪ ɛkspɹˈɛʃən "tɹˈuː ˈɔːɹθədˌɑːks tʃˈɜːtʃ" ɪz sˈɪnənˌɪm fɔːɹ ðɪs lˈæɾɚ, nˈæɹoʊɚ sˈɛns ʌv "kˈæɾɐkˌoʊm tʃˈɜːtʃ".
The expression "True Orthodox church" () is synonym for this latter, narrower sense of "catacomb church".