missiology
noun
mis·si·ol·o·gy
ˌmi-sē-ˈä-lə-jē 
: the study of the church's mission especially with respect to missionary activity
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Catholic Theological Union in Chicago, being a theological school known for outstanding professors of missiology and its international student body, helped prepare Pope Leo for his subsequent ministry that crossed borders and cultures.
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Mark R. Francis, Time, 10 May 2025
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Mark R. Francis, Time, 10 May 2025
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“Missiology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/missiology. Accessed 7 Jul. 2025.
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