pump - radi
- pump power
- punch
- punch-through
- punch-through voltage
- punching-error rate
- punctuation
- punctuation marks
- puncture impulse voltage
- pupinized
- pure binary
- pure continuous wave
- pure resistance
- pure sound
- pure tone
- purge
- purge date
- purging
- push-button
- push-button dialing
- push-button switch
- push-button telephone
- push-down
- push-down list
- push-down stack
- push-down store
- push-on
- push-on amplifier
- push-on circuit
- push-on oscillator
- push-on terminal blade
- push-on transformer
- push-to-test button
- push-up list
- push: in push-pull configuration
- PWS
- PY
- pyramidal horn
- Q-aerial
- Q-antenna
- Q-band rejection
