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definitions
  • synonyms

D/F

or DF

  1. direction finding.
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D.F.1

  1. Defender of the Faith.
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Origin of D.F.1

From the New Latin word Dēfēnsor Fidēī

D.F.2

  1. Distrito Federal.
  2. Doctor of Forestry.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for df

DF

abbreviation for
  1. Defender of the Faith
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D/F

DF

abbreviation for
  1. direction finder
  2. direction finding
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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 in Medicine

df

abbr.
  1. decayed and filled (deciduous teeth)
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DF

abbr.
  1. decayed and filled (permanent teeth)
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.