gyromagnetic Syllabification: (gy·ro·mag·net·ic)Pronunciation: /ˌjīrōmagˈnetik/Definition of gyromagnetic adjective 1 Physics of or relating to the magnetic and mechanical properties of a rotating charged particle. 2(of a compass) combining a gyroscope and a normal magnetic compass. gyromagnetic in other Oxford dictionaries Definition of gyromagnetic in the British & World English dictionary