gym ‧ na ‧ si ‧ um /dʒɪmˈneɪziəm/ BrE AmE noun ( plural gymnasiums or gymnasia ) [countable] formal
[ Date: 1500-1600 ; Language: Latin ; Origin: Greek gymnasion , from gymnazein 'to exercise with no clothes on' , from gymnos 'naked' ]
a ↑ gym
gym ‧ na ‧ si ‧ um /dʒɪmˈneɪziəm/ BrE AmE noun ( plural gymnasiums or gymnasia ) [countable] formal
[ Date: 1500-1600 ; Language: Latin ; Origin: Greek gymnasion , from gymnazein 'to exercise with no clothes on' , from gymnos 'naked' ]
a ↑ gym
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012