1. Being of the nature of a notion or concept
   - conceptional, notional

See also: abstract, ideation

• cyclooxygenase
• cyclooxygenase-1
• cyclooxygenase-2
• cyclopaedia
• cyclopean
• cyclopean masonry
• cyclopedia
• Cyclopes
• Cyclopes didactylus
• Cyclophorus
• Cyclophorus lingua
• cyclopia
• cyclopropane
• cyclops
• Cyclopteridae
• Cyclopterus
• Cyclopterus lumpus
• cyclorama
• cycloserine
• cyclosis
• Cyclosorus
• Cyclosporeae
• Cyclostomata
• cyclostome
• cyclostyle