back - beam
- back
- back bias
- back chaining
- back conductance
- back contact
- back current
- back discharge
- back echo
- back emf
- back end
- back fold
- back lining
- back lobe
- back plate
- back porch
- back stop
- back wave
- back-biased
- back-coupling
- back-mounted
- back-shunt keying
- back-to-back
- back-to-back printing
- back-tracking
- backbone
- backconnector
- backed-up
- backfire
- backflow
- background
- background features
- background image
- background lighting
- background noise
- background processing
- background program
- background task
- backgrounding
- backing medium
- backing store
