Radio Direction Finding…. A misleading term that really meant 'Radio Location' and was the general term used to describe the the area of science involved. The Americans coined the term 'Radar' and it was rapidly adopted.
Refuse derived fuel, composed of processed garbage, that is used in some electric generation plants.
Resource Description Framework, details ...
Radio Direction Finder. An instrument used to detect the bearing of a radio beacon.
Refuse derived fuel.
(In topic `Web Development`) RDF (Resource Description Framework) is a framework for metadata that provides interoperability between applications that exchange machine understandable data on the Web. By providing the basis for generic tools for authoring, manipulating and searching such data on the Web, it promotes the transformation of the Web int...
See Refuse-derived fuel. ... (05 Dec 1998) ... 
Radio Direction FindingRapid Deployment ForceResource Description Framework [W3C]
A set of rules (a sort of language) for creating descriptions of information, especially information available on the World Wide Web. RDF could be used to describe a collection of books, or artists, or a collection of web pages as in the RSS data format which uses RDF to create machine-readable summaries of web sites. RDF is also used in XPFE appli...
Resource Description Framework
refuse derived fuel (electricity)
Rapid Deployment Forces
Radio Direction Finding 
Series of light tanks [US]
Revolving Drug Fund