- center mark
- center plate
- center punch
- center shaft
- center-drill
- centering
- centering hole
- centering screw
- centering square
- centinuous lubrication
- central angle
- central crank
- centralizer
- centre point
- centrifugal casting
- centrifugal lubrication
- centrifugal separator
- centrifugal tachometer
- centrifugal weight
- centrode
- cermets
- certificate
- cetane number
- chafing plate
- chain coupling
- chain crab
- chain drum
- chain gauge
- chain grate
- chain guard
- chain loop
- chain saw
- chain spanner
- chain sprocket
- chamfered section
- chaplet
- chaps
- char
- characteristic curve
- characteristic frequency
- characteristic time
- charge current
- charging pump
- charging side
- chase
- chasing
- check
- check dragline
- check list
- checking table
- center drilling
- centering spigot
- centre drilling
- centre mark
- centre plate
- centre puncher
- centre-drill
- centrifugal atomization
- centrifugal drive
- centrifugal machine
- centrifugal switch
- centring nut
- chafe
- chafing
- chain
- chain cable
- chain control
- chain conveyor
- chain dredger
- chain hoist
- chain level
- chain load
- chain lock
- chain pump
- chain slack
- chain sling
- chain wrench
- chain-driven
- chair
- chambering
- chamfer
- chamfered side
- change
- changeable
- changer
- channel erosion
- channel frame
- channel improvement
- channel roughness
- channelled
- channelling
- channelling machine
- chaotic relief
- characteristic fossil
- charged
- charger
- charging floor
- chase mortise
- chaser
- chassis