diff - dire
- difference
- difference frequency
- difference interference
- difference lobes
- difference mapping
- difference sensitivity
- differenciator
- differencing circuit
- differential
- differential amplifier
- differential discriminator
- differential electromagnet
- differential entropy
- differential gain
- differential instrument
- differential interferometer
- differential keying
- differential Manchester encoding
- differential modulation
- differential motion vector
- differential ondometer
- differential permeability
- differential phase
- differential phase shift-keying system
- differential quantization
- differential relay
- differential RGB delays
- differential rheoplethysmogram
- differential scattering
- differential section
- differential selsyn
- differential signal
- differential stage
- differential switch
- differential thermal detector
- differential transducer
- differential-duplex system
- differential-electromagnetic microphone
- differential-frequency circuit
- differential-frequency meter
