co ‧ ed ‧ u ‧ ca ‧ tion /ˌkəʊedjəˈkeɪʃ ə n, ˌkəʊedjʊˈkeɪʃ ə n $ ˌkoʊedʒə-/ BrE AmE noun [uncountable]
a system in which students of both sexes are educated together
—coeducational adjective
co ‧ ed ‧ u ‧ ca ‧ tion /ˌkəʊedjəˈkeɪʃ ə n, ˌkəʊedjʊˈkeɪʃ ə n $ ˌkoʊedʒə-/ BrE AmE noun [uncountable]
a system in which students of both sexes are educated together
—coeducational adjective
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012