- cold chamber
- cold chisel
- cold content
- cold die
- cold endurance
- cold finger
- cold flow
- cold hammering
- cold load
- cold mold
- cold mould
- cold plug
- cold preservation
- cold pressing
- cold setting
- cold shut
- cold squeezing
- cold storehouse
- cold stretch
- cold transport
- cold welding
- cold-drawn
- cold-press
- colimit
- collapsed fault
- collapsible case
- collapsible formwork
- collapsible tube
- collapsing
- collapsing pressure
- collar cover
- collar roof
- collared hole
- collastic
- collateral trigone
- collating marks
- collating table
- collecting agent
- collecting drain
- collecting manhole
- collection
- collection drawing
- collection service
- collection vehicle
- collective aerial
- collective drawing
- collector
- collector efficiency
- collector furnace
- collector ring
- collector shoe
- collet
- collide
- colliding
- colligate
- collimate
- collimation error
- collinear
- collision
- collocation
- colloid systems
- coffer
- coffer-dam
- cofferdam
- coffin
- coflow
- cog shaft
- cog wheels
- cog-wheel
- cogged
- cogged rail
- cogging pass
- cogging stand
- cognate
- cogwheel
- coherent detector
- coherent light
- coherent waves
- cohesion
- cohesion strength
- cohesionless
- cohesive energy
- cohesive force
- cohesive soil
- cohesive strength
- coho
- coil
- coil form
- coil former
- coil loading
- coil spring
- coil temperature
- coil winder
- coiled spring
- coiler
- coiling
- coin box
- coinage
- coincide
- coincidence