Riddles
Rack Insertion Device (UWER)
RADAR Input Drum
Radial Immunodiffusion - Analytical biochemistry
Radiation-Induced Diffusion (UWER)
Radioimmunodiffusion (SAUS)
Radio Intelligence Division - of the Federal Communications Commission
Radioisotope Detection
Range Instrumentation Division
Range Instruments Development (MCD)
Rapidate Interactive Debugger - Computer science (MHDI)
Reaction Injection Molded (SAUS)
Reactor Institute Delft (SAUS)
Read Identification
Real-Fluid Isentropic Decompression - Engineering
Recepter Interacting Domain - Biochemistry
Record Identity - Military (AFIT)
Records Issue Date - Bell System (TEL)
Reduced Ignition Relay (MCD)
Refractive Index Detector - Instrumentation
Regimented Inmate Discipline - Mississippi State Penitentiary
Registry of Interpreters for the Deaf (EA)
Reglement International Concernant le Transport des Marchandises Dangereuses - International Regulation Governing the Carriage of Dangerous Goods
Regulations Concerning the Carriage of Dangerous Goods by Rail (SAUS)
Regulatory Integration Division - Environmental Protection Agency (GFGA)
Relation Identification (SAUS)
Relative Identifier (SAUS)
Released to Inactive Duty
Reliability Index Determination (MCD)
Remission-Inducing Drug - Medicine
Remote Identifier (SAUS)
Remote Isolation Device (SAUS)
Remove Intoxicated Drivers - An association
Research Institutes and Divisions - of National Institutes of Health
Reset Inhibit Drive
Reset Inhibit Driver (SAUS)
Reset Inhibit Drum
Retrofit Installation Data (MCD)
Reversible Intravas Device
Review Item Discrepancy (MCD)
Review Item Disposition - NASA (NASA)
Richmond, IN - Location identifier - FAA (FAAL)
Riddle Aviation (SAUS)
Rideau - NCIC car model code
Rider College Library, Lawrenceville, NJ - OCLC symbol (OCLC)
Ridotti, reduced (SAUS)
RID - U.S.A. (EA)
Rigaud - NCIC firearms make code (NCIC)
Royal Irish Dragoons - British military (DMA)
Royal Irrigation Department, Thailand (SAUS)
Run-Time Initialization Data (SAUS)
Ruptured Intervertebral Disc (SAUS)
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