(1) (carbon) A chemical element that is the fourth most voluminous in the universe after hydrogen, helium and oxygen. Using the symbol C, carbon is one of the earliest known elements. Its atomic number is 6.
(2) A programming interface from Apple that enabled developers to port their Mac OS 9 apps to OS X without having to recode in Cocoa. Carbon was eliminated in Mac OS X Version 10.8. See
Cocoa.