What does .C stand for?

What does .C mean?

C	Create Computing » Assembly
C	Creativity Community » Educational
C	Creator Community » Religion
C	Credit Business » Accounting
C	Creeping line pattern Governmental » Military
C	Creepy Miscellaneous » Funnies
C	Critical Medical » Physiology
C	Cronies Governmental » Police
C	Crowned Community » Sports
C	Crushing Business » Products
C	Cubs Community » Sports
C	Cult Community » Religion
C	Culture Community
C	cum (Lat.) with Medical » Prescription
C	Cunning Governmental » Police
C	Cuptor International » Romanian
C	Cure Medical » Laboratory
C	curette and cautery of skin lesion Medical » British Medicine
C	Curiosity Community » Educational
C	Current Academic & Science » Ocean Science
C	Cursed Community » Religion
C	Customer Business » General
C	Customer device Computing » Hardware
C	Customer device on a VPN Computing » Networking
C	Cut Academic & Science » Geology