WAcceleration
WBirth rate
WAction potential
WRate of climb
WInstructions per second
WElectric power
WErythrocyte sedimentation rate
WFLOPS
WForce
WIncidence (epidemiology)
WJerk (physics)
WLuminous flux
WMortality rate
WMutation rate
WRate of natural increase
WPrinter (computing)
WSolubility
WReaction rate
WReading
WSampling (signal processing)
WSlew rate
WSolar neutrino
WSpeed
WSupersonic speed
WThrust
WRifling
WVelocity
WVolumetric flow rate