- Powell's method
- Powellite
- Power added efficiency
- Power amplifier
- Power analysis
- Power attenuator
- Power band
- Power bandwidth
- Power cable
- Power conditioner
- Power control
- Power converter
- Power delay profile
- Power density
- Power electronics
- Power engineering
- Power factor
- Power flow
- Power gain
- Power gating
- Power hammers
- Power integrity
- Power inverter
- Power iteration
- Power laws
- Power management
- Power margin
- Power module
- Power number
- Power of 10
- Power of a test
- Power of three
- Power optimization
- Power outages
- Power plants
- Power pool
- Power quality
- Power rating
- Power semiconductor device
- Power series
- Power set
- Power stations
- Power steering
- Power supplies
- Power supply
- Power system
- Power system automation
- Power system protection
- Power tools
- Power transmission
- Power-added efficiency
- Power-flow study
- Power-law fluid
- Power-system automation
- Power-system protection
- Power-to-gas
- Power-to-heat
- Power-to-weight ratio
- Powered exoskeleton
- Powerpack
- Powers of two
- Powertrain
- Poxviridae
- Poynting vector
- Pozzolan
- Pozzolana
- Pozzolanic activity
- Pozzolanic reaction
- Pp2a
- Praat
- Prandtl number
- Praseodymium
- Praseodymium nitrate
- Pre-charge
- Pre-consumer
- Pre-echo
- Pre-emphasis
- Pre-exponential factor
- Pre-exposure prophylaxis
- Pre-ignition
- Pre-mRNA
- Pre-preg
- Pre-processor
- Pre-production
- Pre-salt
- Pre-salt layer
- Pre-test probability
- Preamplifier
- Prebiotics
- Precast concrete
- Precedence graphs
- Precentral gyrus
- Preceramic polymers
- Precession
- Precession electron diffraction
- Precession of the equinoxes
- Precipitate
- Precipitated silica
- Precipitation
- Precipitation hardening
- Precipitation polymerization
- Precipitationshed
- Precision
- Precision agriculture
- Precision and recall
- Precision engineering
- Precision rectifier
- Preclinical
- Precocious puberty
- Precoding
- Precomputation
- Preconditioners
- Preconditions
- Preconsolidation pressure
- Precordial thump
- Precursor cells
- Precursor chemicals
- Precursors
- Predetermined motion time system
- Prediabetes
- Predication
- Predictability
- Predicted environmental concentration
- Prediction interval
- Prediction markets
- Predictive analytics
- Predictive learning
- Predictive maintenance
- Predictive medicine
- Predictive modeling
- Predictive models
- Predictive value
- Predistortion
- Predominance diagram
- Preemption
- Preemptive multitasking
- Prefabricated
- Prefabricated buildings
- Prefabrication
- Preferences
- Preferred reporting items for systematic reviews and meta-analyses
- Prefetching
- Prefix code
- Prefixes
- Prefrontal cortex
- Pregnancy
- Pregnancy test
- Pregnane
- Pregnant leach solution
- Pregnenolone