What does rb stand for?

Rebreathing - Medicine (DAVI)

Base Resistance (IDOE)

Rockwell Hardness B-Scale (WDAA)

Retinoblastoma - Oncology

Robertsonian Translocation (QSUL)

Rock Bass - Ichthyology

Rubidium - Chemical element

Barrington Public Library (SAUS)

Botswana - IYRU nationality code (IYR)

Bulletins - A publication (SAUS)

Congo - NCIC country-territory code (NCIC)

Congo Republic - NCIC country-territory code (NCIC)

RADAR Beacon

Radiation Burn (MELL)

Radiobalance (SAUS)

Radio Bearing (DEN)

Radiobiology (SAUS)

Radio Brenner - Radio network - Germany

Railroad Bond - Business term (MHDW)

Railway Board - Indian Railway (TIR)

Rapid Bloom (SAUS)

Rate Beacon (AAG)

Rated Boost

Rating Board - Medicine (MAE)

Ration Book

Reactional Biography - A. Anastasi (DIPS)

Reactor Building - Nuclear energy (NRCH)

Read Back (SAUS)

Read Backward

Read Buffer

Reading & Bates - NYSE symbol

Reading & Bates Corp. - NYSE symbol (SPSG)

Reasons to Believe - An association (EA)

Rebated rim (SAUS)

Reciprocal Beneficiary (ADWA)

Recirculating Ball - Automotive engineering

Reclamation Bureau (SAUS)

Reconnaissance Bomber

Record Block (SAUS)

Record Book

Recovery Beacon

Red Book - Full name is "Drug Topics Red Book," a pharmacist's guide - A publication

Red Border (COE)

Red Brigades - Revolutionary group - Italy

Reddish Brown - Soil biology - Soil color (QSUL)

Redeemable Bond - Investment term

Reduced Blast (SAUS)

Reducing Bushing (SAUS)

Reentry Body

Reference Burst (LAIN)

Reflected Binary (SAUS)

Regular Budget - United Nations

Reinforced Brick (SAUS)

Relationship Banking (EBF)

Relative Bearing - Navigation

Relay Block (MSA)

Remote Batch - Computer science (IAA)

Renaut's Bodies - Neurology

Renegotiation (SAUS)

Renegotiation Board - Terminated, 1979 - Federal government

Renegotiation Bulletins - A publication (DLA)

Repeated Back (SAUS)

Report Bibliography

Republic of Burma (SAUS)

Request Block

Request for Bid (EEVL)

Rescue Boat (SAUS)

Research Board (SAUS)

Research Boston Corp. - Commercial firm

Research Bulletin

Reserve Bank (ADA)

Reserve Blocked (IAA)

Reset Bit (SAUS)

Resistance Brazing

Respiratory Bronchiole - Medicine (MAE)

Rest Button (SAUS)

Restiform Body - Neuroanatomy

Resting Bit (SAUS)

Restricted Bulletin

Retractable Boom

Retraining Benefits - Employment (OICC)

Retrobulbar - Ophthalmology (DAVI)

Return to Bias

Revenue Bond - Investment term

Reverse Blocked

Review Board (GOBB)

Revision Block (MSA)

Rheostat Braking (SAUS)

Rice (Flooded) - Soil biology - Human-introduced crops (QSUL)

Richard Brand - Air show performer (ASPC)

Rich Bitch - Slang

Ridder/Braden, Inc. - Commercial firm

Rifle, Bolt-action - NCIC gun type code (NCIC)

Rifle Brigade

Right Base - Aviation (FAAC)

Right Boat (SAUS)

Right Border - Genetics

Right Boundary (SAUS)

Right Bronchus - Anatomy (DAVI)

Right Bundle - Medicine (DB)

Right Buttock - Anatomy

Right Button (SAUS)

Right Fullback - Soccer

Rigid Boat

Rigid Body

Ring Back - Computer science (IAA)

Ripple Banking - Electronics (ECII)

Ritzaus Bureau - Press agency - Denmark

Road Bend

Road Buffer (SAA)

Roast Beef - Restaurant slang

Rob - Telegraphy (PCTE)

Robot (SAUS)

Rocket Branch (AAG)

Rohon-Beard (Cells) - Neurology

Rollback - Telecommunications (TEL)

Rollback Disability (SAUS)

Rollback Disability Claims - Social Security Administration (OICC)

Roll Bar - Automotive engineering

Roller Bearing

Roman-British

Rom's Bar - Association (EA)

Rose Bengal - A dye

Rotating Beacon (PIPO)

Rotating Bolt (SAUS)

Roth-Bernhardt - Syndrome - Medicine (DB)

Round Barrel - Gunnery

Round Bobbin - A publication (EAAP)

Round bottom - NCIC boat hull shape code (NCIC)

Royal Burgh

Rubber Band (ADA)

Rubber Base - Technical drawings

Rubber Bearing (DS)

Rubber Block (DNAB)

Rubber Board (SAUS)

Ruble - Monetary unit - Former USSR

Rule Based (SAUS)

Run Back - Typography

Running Back - Football

Rural Bank (ADA)

Russell Bodies - Medicine

Russet-Burbank Potato

United States Individual Retirement Bond - NCIC United States-issued securities code (NCIC)

United States Retirement Plan Bond - NCIC United States-issued securities code (NCIC)