1. fn - Noun
2. Fn - Proper noun
FN (plural FNs)
Initialism of footnote.
Diminutive of FN-FAL (the NATO standard rifle)
Diminutive of FN Five-seven (the pistol derivative of the FN-FAL)
FN
Abbreviation of Fabrique Nationale de Herstal.
FN (plural FNs)
fibronectin
FN (plural FNs)
Initialism of false negative.
Abbreviation of footnote.
Abbreviation of function.
Fn
Alternative form of fn (“function”)