- conformal coating
- conformance factor
- consignment
- consistency gauge
- consistency test
- consistent
- consistometer
- consolidated sand
- consolidator formation
- constant cell
- constant difference
- constant equilibrium
- constant level
- constant pressure
- constant speed
- constant weight
- constantan
- constituent
- constitution diagram
- construction diagram
- construction valley
- consulting engineer
- consumer goods
- consumption
- consumption test
- contact agent
- contact aureole
- contact catalysis
- contact chamber
- contact condenser
- contact corrosion
- contact distillation
- contact filtration
- contact log
- contact metamorphism
- contact pin
- contact plating
- contact series
- contact space
- contact substance
- contact tower
- container
- containment boom
- contaminated fuel
- contaminated sample
- contamination
- contamination meter
- continental area
- continental margin
- continental slope
- continuous distillation
- continuous drier
- continuous filament
- continuous flow
- continuous grinder
- consume
- contact adhesive
- contact adsorption
- contact area
- contact column
- contact lode
- contact mineral
- contact zone
- contain
- container rock
- contaminant
- contaminated mud
- contiguous seam
- continency plan
- continental drift
- continental glacier
- continental shield
- continuous access
- continuous analyser
- continuous analysis
- continuous centrifuge
- contract purchase
- control assay
- control head
- control knob
- control panel
- controlling facture
- conventional fuel
- convergent recorder
- conversion constant
- conversion nose
- conversion process
- converter mouth
- converting
- converting furnace
- cooling area
- cooling capacity
- cooling film
- cooling fissure
- cooling jacket
- continuous lubrication
- continuous printer
- continuous sample
- contract work
- contraction fissure