DFR may refer to:
*
Cosworth DFR
The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing. The name is an abbreviation of ''Double Four Valve'', the engine being a V8 development of the earlier four-cylinder FVA, which had f ...
, a 1987 race car engine
*
Dean Forest Railway, Gloucestershire, England
*
Decreasing failure rate
*
Deutscher Frauenring, a political advocacy organisation in Germany
*
Dihydroflavonol 4-reductase
In enzymology, a dihydrokaempferol 4-reductase () is an enzyme that catalyzes the chemical reaction
:cis-3,4-leucopelargonidin + NADP+ \rightleftharpoons (+)- dihydrokaempferol + NADPH + H+
Thus, the two substrates of this enzyme are cis-3,4- ...
, an enzyme class
*
Divergence-from-randomness model In the field of information retrieval, divergence from randomness, one of the first models, is one type of probabilistic
Probability is the branch of mathematics concerning numerical descriptions of how likely an Event (probability theory), ...
, in information retrieval
*
Dounreay Fast Reactor, Scotland
*
Dual fluid reactor
The Dual Fluid Reactor is a reactor concept of the Canadian company Dual Fluid Energy Inc. combining the advantages of the molten salt reactor with those of the liquid metal cooled reactor, it is supposed to reach the criteria for reactors of the ...
{{disambiguation