- coil compartment
- coil cooler
- coil exit
- coil freezing
- coil pressure
- coil side
- coil span
- coiling machine
- coiling pressure
- coincidence counter
- coincidence factor
- cold application
- cold chamber
- cold consumption
- cold drawer
- cold leak
- cold medium
- cold shortening
- cold surface
- collector
- collector ring
- collector shoe
- collisionless flow
- coherence time
- coil
- coil configuration
- coil form
- coil icing
- coil loading
- coil pitch
- coil section
- coil serving
- coincidence
- cold cathode
- cold chain
- cold conditions
- cold distribution
- cold emission
- cold generation
- cold holdover
- cold insulation
- cold store
- cold treatment
- coldrawer
- collimator
- collision rate
- collisionless shock
- colloid electrolyte
- color center
- color emissivity
- collinear array
- collision excitation
- colloidal crystal
- colloidal state
- color correction
- colorimetry
- colour
- colour content
- colour saturation
- coloured noise
- combination condenser
- combine test
- combined refrigerant
- combined velocity
- cometary gas
- comfort environment
- cold loop
- cold production
- cold refrigerant
- cold room
- cold shipment
- cold stabilization
- cold stream
- cold transfer
- cold-stored
- Colebrook formula
- collapse
- collective effects
- collective paramagnetism
- collector plate
- collision broadening
- collisional diffusion
- cologarithm
- columnar
- combination cable
- color slide
- color-free
- colour burst
- colour filter
- colour matrixing
- colour rendition
- colour temperature
- columbium
- coma
- coma lobe
- community reception
- commutating pole
- commutating reactor
- commutating winding
- commutating zone