Initialism of false memory syndrome. / Initialism of facial masculinization surgery.

Initialism of Federated Malay States.

plural of FM

(uncountable) Initialism of frequency modulation. / (countable, military) Initialism of field marshal. / (countable) Initialism of finance minister. / (countable) Initialism of foreign minister.

(US, meteorology) Initialism of one-hour timelag fuel moisture.