1.1
- Grammar feminine.【语法】同FEMININE.
1.2
- in combination(in units of measurement) femto- (10-15).（用于量度单位中）同FEMTO-.
1.3
- (in textual references) folio.（文献标注用语）同FOLIO.
1.4
- Music forte.【乐】同FORTE.
1.5
- (in racing results) furlong(s).（赛车或赛马成绩用语）同FURLONG或furlongs.
1.6
- Chemistry denoting electrons and orbitals possessing three units of angular momentum【化】（指电子和轨道）有三个角动量单位的：
f-orbitals.
f轨道。
ORIGIN: f from fundamental, originally applied to lines in atomic spectra.