- circuit capacity
- circuit emulation
- circuit grade
- circuit protection
- circular chart
- circular correlation
- circular flow
- circular mil
- circular order
- circular point
- circular scale
- circular shaft
- circular shift
- circular wait
- circular wave
- circulary
- circulating capital
- circulating storage
- circumcircle
- circumference
- circumscribed
- circumscribed polygon
- Cisco Systems
- cladding diameter
- cladding rail
- circumferential stress
- circumscribed cone
- circumscribed triangle
- circumsphere
- claim token
- Clapeyron equation
- class frequency
- class hierarchy
- class library
- class mark
- classic group
- classifying space
- clastic solid
- clause
- cleaning
- cleaning web
- cleanup
- clear band
- clear data
- clear entry
- clear outline
- clear request
- clear screen
- clearance
- clearance level
- clearance point
- clearness
- clerical work
- client agent
- client area
- client window
- client-sever
- clamshell excavator
- class authority
- class interrupt
- class space
- clay
- clay sand
- clayed sand
- clear area
- clear formats
- clear session
- cleartext
- cleavable
- clerical machine
- click
- clicking
- client
- client application
- client computer
- client hub
- client workstation
- client-server
- clip
- clip-book
- clipping path
- clipping region
- clock cycle
- clock frequency
- clock pulse
- clock register
- clock speed
- clocking
- clone
- close dot
- closure algebra
- closure domain
- closure line
- closure operator
- clothoid
- cluster
- cluster agent
- cluster entry
- cluster feature
- cluster function