D/F

¹ American

Or DF

direction finding.

D.F. ² American

abbreviation

Defender of the Faith.

D.F. ³ American

abbreviation

Distrito Federal.
Doctor of Forestry.

D/F ¹ British

abbreviation

direction finder
direction finding

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

DF ² British

abbreviation

Defender of the Faith

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of D.F.

From New Latin Dēfēnsor Fidēī

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023