DF

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DF

abbr.
1. Latin Defensor Fidei (Defender of the Faith)
2. direction finder
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

DF

abbreviation for
(Heraldry) Defender of the Faith
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

D/F

or DF,

1. direction finder.
2. direction finding.

D.F.

Doctor of Forestry.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Mentioned in
References in periodicals archive
Test for the interaction of phase and cage diameter was significant for male survival ([chi square] = 24.55, d.f. = 2, P<0.0001) and for female survival showed no significant difference ([chi square] = 3.63, d.f.
[empty set] of 10 PVC tube (cm) Pre-oviposition Phase 1 ([F.sub.2,57] 5.00 [+ or -] 0.10 (a) = 0.00, P = 1.0000)(1,2) period (days) Phase 2(1) 5.45 [+ or -] 0.35 (ab) [F.sub.2,57] = 4.92, P = 0.0107) Male survival Phase 1(1) ([chi 34.00 [+ or -] 5.64 (b) square] = 12.07, d.f. = 2, P = 0.0023) (%) Phase 2(1) ([chi 55.00 [+ or -] 5.60 (a) square] = 15.57, d.f.
The number of species responding negatively to increased burning frequency, 341, was significantly greater ([[Chi].sup.2] = 6.94, 1 d.f., P [less than] 0.01) than the number responding positively, 277, and the number of species responding negatively to burning in the sampling year, 344, was significantly greater ([[Chi].sup.2] = 15.86, 1 d.f., P [less than] 0.001) than the number of species responding positively, 274 (Table 4).
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