abbreviation
1.
/ ˌef ˈem; NAmE / frequency modulation (a method of broadcasting high-quality sound by radio) :
Radio 1 FM
2.
(in writing) Field Marshall
abbreviation
1.
/ ˌef ˈem; NAmE / frequency modulation (a method of broadcasting high-quality sound by radio) :
Radio 1 FM
2.
(in writing) Field Marshall
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005