circ - comp
- circle jack
- circuit
- circuit battery
- circuit element
- circuit feed
- circuit guard
- circuit representation
- circuit tester
- circular chute door
- circular current; circulating current
- circular cut
- circular cut joint
- circular disk
- circular electrode
- circular frequency
- circular girder
- circular inhomogeneity
- circular loop
- circular orbit
- circular perforation
- circular saw
- circular section
- circular sweep
- circular symmetry
- circular system
- circular track
- circular wavefront
- circulating current
- circulating load
- circulating pipe
- circulating pump
- circulating system
- circulation
- circulation loss
- citric acid
- clamp
- clamp ear
- clamp operator
- clamp shaft; flanged coupling coupling
- clamping bolt
