cos ‧ mol ‧ o ‧ gy /kɒzˈmɒlədʒi $ kɑːzˈmɑː-/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: Modern Latin ; Origin: cosmologia , from Greek kosmos ( ⇨ ↑ cosmos ) + Modern Latin -logia '-logy' ]
the science of the origin and structure of the universe, especially as studied in ↑ astronomy