/ kɒzˈmɒlədʒi; NAmE kɑːzˈmɑːl-/ noun
[ U ] the scientific study of the universe and its origin and development
► cosmo·logic·al / ˌkɒzməˈlɒdʒɪkl; NAmE ˌkɑːzməˈlɑːdʒ-/ adjective
► cos·molo·gist / kɒzˈmɒlədʒɪst; NAmE kɑːzˈmɑːl-/ noun
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WORD ORIGIN
mid 17th cent.: from French cosmologie or modern Latin cosmologia , from Greek kosmos order or world + -logia discourse.