form - func
- front-to-back ratio
- front-to-rear ratio
- front-wall photocell
- front-wall photovoltaic cell
- frontier
- frontispiece
- frontside-illuminated interline transfer
- frost beamformer
- frost recording
- frozen account
- frozen field
- frozen field line
- frozen flux
- frozen image
- frozen photoconductivity
- frozen state
- frozen-in flux
- frozen-in vacancy
- FRS
- fruit
- fruit pulse
- frustrated
- frustrated antiferromagnet
- frustrated bonds
- frustrated ferromagnetic
- frustrated internal reflectance
- frustrated internal reflectance modulator
- frustrated magnet
- frustrated total internal reflection
- frustrated total reflection filter
- frustration
- FRX
- fry
- frying
- frying arc
- frying noise
- FS
- FS signal
- FS transceiver
- FSA
