- fast reaction
- fast reactor
- fast-curing
- fasten
- fat
- fat asphalt
- fat clay
- fat content
- fat dye
- fat gas
- fat hardening
- fat soil
- fat solvent
- fatigue crack
- fatigue failure
- fatigue fracture
- fatigue hardening
- fatigue impact
- fatigue resistance
- fatigue softening
- fatigue test
- fatten
- fattening
- fatty
- faujasite
- fault
- fault basin
- fault bench
- fault block
- fault breccia
- fault bundle
- fault cliff
- fault coal
- fault coast
- fault complex
- fault detector
- fault dip
- fault escapement
- fault fissure
- fault ledge
- fault network
- fault outcrop
- fault ridge
- fault rock
- fault strike
- fault system
- fault through
- fault trap
- fault valley
- fault vein
- faultage
- faulted
- faulted deposit
- faulted formation
- faulted juxtaposition
- faulted structure
- faulting
- fay
- feasible
- feather alum
- feathered
- feature code
- federal specification
- feed
- feed belt
- feed box
- feed chute
- feed cock
- feed control
- feed gas
- feed inlet
- feed nozzle
- feed pipe
- feed plate
- feed pressure
- feed rack
- feed rate
- feed screw
- feed system
- feed tank
- feed tray
- feed valve
- feed water
- feed-engine
- feedback
- feeder system
- feld field
- fell heap
- felsic mineral
- felt
- female connection
- ferricyanogen
- ferritungstite
- ferronickel
- ferrotungsten
- ferrous chloride
- ferruginous spring
- fertility
- fiber washer
- fiberboard