What does DF stand for?

What does DF mean?

DF	D F Miscellaneous » Unclassified
DF	Distrito Federal International » Spanish
DF	Distrito Federal International » Mexican
DF	Data File Computing » Databases
DF	Delta Force Governmental » Military
DF	Design For .... Academic & Science » Architecture
DF	Driving Force Miscellaneous » Unclassified
DF	Duty Free Governmental » US Government
DF	Discount Factor Business » Accounting
DF	Discussion Forum Internet » Chat
DF	DarkField Academic & Science » Electronics
DF	Direction Finder Academic & Science » Meteorology
DF	Direction Finder Governmental » Transportation
DF	DorsiFlexion Medical » Physiology
DF	Don't Fragment Computing » Hardware
DF	Disk Format Computing » General
DF	Defense Force Governmental » Military
DF	Douglas Fir Academic & Science » Botany
DF	Direction Flag Computing » Assembly
DF	Distributed Folding Miscellaneous » Unclassified
DF	Dean Foods Company Business » NYSE Symbols
DF	Districto Federal Miscellaneous » Unclassified
DF	Dark Forces Governmental » Military
DF	Data Frame Computing » Telecom
DF	Digital Forum Internet