1. Performing an essential function in the living body
   - vital

See also: essential

• C battery
• C clef
• C compiler
• C major
• C major scale
• C of E
• C program
• c'est la vie
• c'mon
• C-clamp
• C-horizon
• c-note
• c-number
• C-ration
• C-reactive protein
• C-section
• C. D. Gibson
• C. diphtheriae
• C. H. Best
• C. K. Ogden
• C. Northcote Parkinson
• C. P. Snow
• C. psittaci
• C. S. Forester
• C. S. Lewis