- polar distance
- polar liquid
- polar relay
- polarimetry
- polarity
- polarity reversal
- polarity tester
- polarizability
- polarization
- polarization charge
- polarization factor
- polarization potential
- polarization scattering
- polarized plug
- polarized ray
- polarized relay
- polarizer
- polarogram
- polarograph
- polarography
- pole horn
- pole modulation
- pole piece
- pole strength
- poliergic
- polychromatic beam
- polychromatic radiation
- polychrome printing
- polycrystalline
- polymeric
- polymerization
- polyphase machine
- polyphase system
- polyphase transformer
- polystyrene capacitor
- polystyrene insulant
- polystyrene panel
- polystyrene sheet
- polytropic process
- polyurethane insulation
- polyvalence
- polyvinylchloride film
- ponderable
- pool boiling
- pool cathode
- population
- porcelain capacitor
- portable refrigerator
- position limitation
- positive
- porous insulation
- port
- portable cooler
- portal structure
- position control
- positive beam
- positive circulation
- positive feed
- positive feedback
- positive temperature
- post insulator
- pot
- potential barrier
- potential drop
- potential gradient
- potential scattering
- potential transformer
- poloidal plane
- Polya model
- polyatomic molecule
- polychroism
- polycrystal
- polygon
- polygon connection
- polymer
- polymerism
- polymorphic transformation
- polyphase circuit
- polystyrene dielectric
- polystyrene insulation
- polytropic change
- polytropic expansion
- polytropic exponent
- polyurethane panel
- polyvalent
- polyvinyl chloride
- Pomeranchuk cooling
- ponderomotive
- pool
- poor tone
- potentiometric electrode
- Potier diagram
- potted circuit
- potting
- pounding
- pour point
- powder freezing
- powdered insulation
- powdery snow
- power amplification