- frosting conditions
- frostproof
- frozen freight
- frozen zone
- full speed
- full-scale
- fullness factor
- full flashing
- functional relationship
- fundamental constant
- fundamental quantitive
- fusion reaction
- G string
- gage pressure
- gain
- gain margin
- galactic coordinates
- galate
- gamma irradiation
- gamma-chamber
- gamma-detector
- function module
- function sharing
- fundamental law
- fundamental mode
- fundamental particle
- fundamental series
- fuse
- fuse clip
- fuse link
- fusing point
- g-factor
- galactic halo
- galactic nebulae
- galena detector
- Galton whistle
- galvanic couple
- galvanostegy
- gamma radiation
- gamma spectrum
- gamma-spectrometer
- gas
- gas adsorbate
- gas binding
- gas charge
- gas chromatograph
- gas circuit
- gas cooler
- gas cooling
- gas counter
- gas filter
- gas flow
- gas header
- gas ionization
- gas jacket
- fuse carrier
- fuse cutout
- fuse wire
- gain regulator
- gal
- galactic dust
- galactic irradiation
- galvanic binding
- galvanomagnetic effect
- galvanometer constant
- gamma correction
- gamma-flux
- gamma-transition
- garble
- gas cleaning
- gas constant
- gas coolant
- gas geyser
- gas heating
- gas injury
- gas leakage
- gastight casing
- gastight insulation
- gate
- gauge invariance
- gauge pressure
- gauss
- Gauss positions
- Gaussian system
- Gaussian units
- Gaussmeter
- gegenion
- gender changer
- generalize
- gas lighter
- gas liquefaction
- gas motion
- gas neutrality
- gas operated
- gas panel
- gas percolation
- gas pressure
- gas pulsation
- gas purging
- gas purification