phiˌlosopher’s ˈstone BrE AmE noun [singular]
an imaginary substance that was thought in the past to have the power to change any other metal into gold
phiˌlosopher’s ˈstone BrE AmE noun [singular]
an imaginary substance that was thought in the past to have the power to change any other metal into gold
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012