- cradle iron
- cranch
- crane winch
- crank head
- crankcase sludge
- cranking
- crater lake
- craton
- cream
- creaming agent
- creationism
- crack nucleation
- crack velocity
- cracked distillate
- cracked naphtha
- cracking capacity
- cracking chamber
- cracking cycle
- cracking furnace
- cracking process
- cracking reactor
- cracking still
- cracking temperature
- cracking zone
- crakend
- crandallite
- crank angle
- crank guard
- crank winch
- crankcase mayonnaise
- crankcase oil
- crankshaft bearing
- crankshaft flange
- crater rim
- crawler
- crawler loader
- crawler tractor
- crawling
- crazing
- cream lime
- creamed latex
- crednerite
- creep hole
- creep loading
- creep stress
- creep test
- creeper chain
- creeping
- creosote
- creosote oil
- creosote stain
- crepe paper
- crepe rubber
- crescent pump
- cresol resin
- cressol
- crevasse
- crevice corrosion
- cribbed chute
- crinkle
- critical concentration
- critical data
- critical production
- critical viscosity
- critical volume
- crocus
- cropping
- cross baffle
- crumbly limestone
- crush breccia
- crushed zone
- crushing strength
- crystal
- crystal glass
- crystal growth
- crystal habit
- crystal plasticity
- crystal size
- crystallizing pond
- crocoite
- cross bedded
- cross bunker
- cross cliff
- cross course
- cross current
- cross joint
- cross texture
- cross tie
- croton oil
- crown sheet
- crown support
- crude bottoms
- crude distillation
- crude oil
- crude solvent
- crude still
- crude wax
- crumbing crew
- crushable ceramics
- crushed stone