ecclesiology
noun
ec·cle·si·ol·o·gy i-ˌklē-zē-ˈä-lə-jē 
e-ˌklē-
plural ecclesiologies
1
: the study of church architecture and adornment
2
: theological doctrine relating to the church
ecclesiological
i-ˌklē-zē-ə-ˈlä-ji-kəl
adjective e-ˌklē-
ecclesiologist
i-ˌklē-zē-ˈä-lə-jist
noun e-ˌklē-
Example Sentences
Recent Examples on the Web Questions of how to address issues at a national level in such a decentralized organization are genuinely difficult to answer, and the report grapples with those difficulties without compromising on basic questions of Baptist ecclesiology. 
The Editors, National Review, 25 May 2022
The Editors, National Review, 25 May 2022 Word History
Etymology
Late Latin ecclēsia "assembly of Christian believers, Christian Church" + -o- + -logy — more at ecclesial
First Known Use
circa 1837, in the meaning defined at sense 1