ˌintə(r)ˈnən](t)sēˌō, -nu̇n], ]shēˌō, ]chēˌō noun
Etymology: Italian internunzio, from Latin internuntius, internuncius, from inter- + nuntius, nuncius messenger
1. : a messenger between two parties : go-between
2. : a diplomatic papal representative of lower rank than a nuncio
3. : a minister formerly representing a government (as the Austrian government) at Constantinople