- collapse structure
- collapsing
- collecting box
- collecting system
- collet
- colloidal dispersion
- colloidal impurities
- colloidal mud
- colloidal structure
- coffer
- cognate
- coherent interface
- coil clutch
- coincidence
- coincidence correction
- coincidence error
- coke breaker
- coke dross
- coke iron
- coke oven
- coke platform
- coke production
- coke settler
- coke yield
- coker
- coking coal
- coking still
- cokings
- col
- colatitude
- Colburn method
- colcothar
- cold asphalt
- cold crack
- cold molding
- cold resistance
- cold test
- cold valve
- cold-hammer
- cold-short
- cold-stamp
- collar step
- collecting
- collecting oil
- collecting vat
- colligative property
- colloid solution
- colloidal chemistry
- colloidal material
- colloidal sulphur
- colloxylin
- colluvial soil
- colophony
- color emissivity
- color fastness
- collimation
- collinear point
- collision bulkhead
- collobrierite
- collochemistry
- collodion cotton
- colloidal lubricant
- colloidal movement
- color filter
- color print
- color response
- color spectrum
- colorimetric purity
- colorless dye
- colorlessness
- colorrabilly
- colorundum
- colour coat
- colour equation
- colour indicator
- colour response
- colour strength
- colour tone
- colouring admixture
- column mixer
- comagmatic
- comb
- combinating perforating
- combination drive
- combination unit
- combined carbon
- combined charge
- combined feed
- combined gold
- combined sulphur
- combing wave
- comburent
- combustible constituent
- combustible liquid
- combustion bomb
- combustion curve
- combustion data
- combustion head
- combustion limits
- combustion method