fm

Symbol

 * 1)  The symbol for femtometer or femtometre, a unit of length. The name fermi for this unit is obsolete.
 * 2) abbreviation for Fathom

Noun

 * 1) am (indicating hours in the morning);

Usage notes

 * Since the 1960s, Sweden primarily uses the 24 hour clock, making am/pm abbreviations unnecessary and less common