resp - roll
- respiking
- respiration depth
- respiration rate
- responder
- responder beacon
- response altitude
- response characteristic
- response curve
- response of structure
- response of the recording instrument
- response speed
- response time
- responsible
- responsivity
- rest shooting
- restart
- restartable engine
- restartablility
- resting time
- restoration
- restoring coil
- restoring force
- restraining effect
- restraining wire
- restraint
- restricted area
- restricted charge
- restricted orifice
- restricted propellant charge
- restricted radius of action
- restricted road
- restricted speed
- restricted wavelength region
- restriction coating
- restrictor sheet
- restrictor thickness
- resultant
- resultant accuracy
- resultant action
- resultant aerodynamic force
