- casing string
- casing tongs
- casinghead gas
- cask
- cassava atrach
- cassia
- cassiterite
- cast
- cast alloy
- cast brass
- cast film
- cast plate
- cast-iron
- cast-on
- castanite
- castellated rock
- castile soap
- casting bed
- casting resin
- carriage free
- carriage grease
- carriage jack
- carrier
- carrier wave
- carrying capacity
- carrying power
- carstone
- cascade connection
- cascade cooler
- cascade tray
- case hole
- cash book
- cash sale
- cashew gum
- casing
- casing clamp
- casing collar
- casing float
- casing head
- casing pressure
- Castner cell
- Castner process
- castor
- castor oil
- casualty
- casualty insurance
- cat cracker
- cat gold
- cat salt
- cat skinner
- catabolism
- cataclactic breccia
- cataclastic structure
- cataclysm
- catalyst activity
- catalyst case
- catalyst chamber
- catalyst cracker
- catalyst damage
- catalyst poison
- catalyst stripping
- catalyst support
- catalyst unit
- catalytic
- catalytic alkylation
- catalytic converter
- catalytic cracking
- catalytic decomposition
- catalytic dehydration
- catalytic hydrogenation
- catalytic poison
- catalytic reaction
- catalytic reactor
- Catarole process
- catastrophism
- catch drain
- catch rod
- catechutannic
- catforming
- cathead
- cathodic inhibitor
- cathodic polarization
- cativo
- caustic bottoms
- caustic lye
- caustic pot
- caustic potash
- caustic salt
- caustic scrubbing
- caustic treater
- causticize
- caution board
- cavern limestone
- cavernous limestone
- cavernous vein
- caving
- cavitation
- caviuna
- cay
- cedar