Recommended Dietary Allowance 
Recommended Dietary Allowances 
Recommended Daily Allowance 
Radar Data Acquisition 
Remote Data Access 
Regional Development Agency 
Remote Database Access 
recommended daily allowances 
Registered Dental Assistant 
Requirements Development and Analysis 
Research Development and Acquisition 
Research, Development and Acquisition 
Resident Data Area 
regularized discriminant analysis 
representational difference analysis 
Requested Destination Address 
Resident Doctors Association 
Resource Description and Access 
Right displacement of the abomasum 
rod drop accident 
Rural Development Administration 
Radial Distribution Analysis 
Reader's Digest Association, Inc. 
Received Data Inverted 
recently detoxified alcoholics 
recommended daily amount 
Recommended Daily Dietary Allowances 
Records Disposition Authority 
Reduced Diameter Array 
Redundancy analysis