fm

1 of 4

abbreviation (1)

fathom

Fm

2 of 4

symbol

fermium

FM

3 of 4

noun

ˈef-ˌem 

often attributive

: a broadcasting system using frequency modulation

also : a radio receiver of such a system

FM

4 of 4

abbreviation (2)

field manual

Examples of fm in a Sentence

Recent Examples on the Web

Noun

Authorities believe the fire was arson and the sheriff’s office later shared on Facebook that the vehicle was found on an oil pad site on FM 974 north of Highway 21. — Francie Ebert, NBC news, 19 Aug. 2026

Its body-moving riff and playfully randy lyrics have made the track a regular on FM rock playlists for half a century. — Erik Pedersen, Deadline, 18 Aug. 2026

Moon as a shield Earth’s ionosphere and radio interference (FM radio, telecommunications) block these low-frequency signals. — Mrigakshi Dixit, Interesting Engineering, 14 Aug. 2026

My own sources state that this is true — KCAL-FM was not profitable. — Richard Wagoner, Daily News, 10 Aug. 2026

Word History

Etymology

Noun

frequency modulation

First Known Use

Noun

1940, in the meaning defined above

Kids Definition

FM

noun

ˈef-ˌem

: a system of broadcasting using frequency modulation

also : a receiver of radio waves broadcast by such a system

FM adjective

Medical Definition

Fm

symbol

fermium