- frost zone
- frostbitten
- frosting back
- Froude number
- frozen condition
- frozen equivalent
- frozen flux
- frozen liquid
- frozen tissue
- fuel element
- fugacity coefficient
- freezing plate
- freezing pressure
- freezing room
- freezing solution
- freezing technique
- freezing time
- freezing tunnel
- freezing zone
- freon absorber
- freon component
- freon condenser
- freon consumption
- freon gas
- freon operated
- freon recirculation
- frequency converter
- frequency drift
- frequency regulator
- frequency shift
- fresh air
- Fresnel region
- friction cone
- frictional resistance
- frigorie
- front focus
- front plate
- frost accumulation
- frost detector
- frost mass
- frosted lamp
- frosted surface
- frosting temperature
- frozen cargo
- frozen flow
- frozen material
- frozen mix
- frozen organ
- frozen solvent
- Fuel oil
- fugacity
- fulerene
- full load
- fundamental error
- fundamental formula
- fundamental interaction
- fundamental quantity
- funnel
- fuse alarm
- fuse block
- fusing factor
- galilean transformation
- galvanic battery
- galvanic linking
- gamma-decay
- gamut
- gang capacitor
- gang switch
- gap
- freezing load
- freezing machinery
- freezing pocket
- freezing process
- freezing response
- freezing schedule
- freezing stage
- freezing surface
- freezing wall
- freon addition
- freon circuit
- freon concentration
- freon contamination
- freon evaporation
- freon leak
- freon pump
- frequency analyzer
- frequency fall
- frequency modulation
- frequency translator
- Fresnel diffraction
- fresnel zones
- friction horsepower
- front porch
- frost density
- frost fracture
- frost mist
- frost removal
- frost wall
- frosted
- frosted tube