fend - firs
- fender
- fender guard
- fender pier
- ferado lining
- ferodo lined disk
- ferret reconnaissance satellite
- ferret video receiver
- ferreting device
- ferrh
- ferri diffuser
- ferrite core
- ferrite core memory
- ferrite diode circuit
- ferrite matrix
- ferrite phase shifter
- ferrite rod antenna
- ferrite switch
- ferrite tuning element
- ferro concrete frame
- ferroelectric condenser
- ferroelectric memory
- ferroelectric shift register
- ferroresonant computing circuit
- ferrosonde magnetometer
- ferry
- ferry cable
- ferry capacity
- ferry crossing
- ferry launch
- ferry recovery
- ferry system
- ferry tank
- ferrying control officer
- fiber container
- fiber glass filament
- fiber glass insulation
- fiber glass reinforced missile tube
- fiber laser
- fiber optical cable
- fiberglass launcher
