What does rf stand for?

Radio Frequency (GAVI)

Reticular Formation (DIPS)

Right Field (NTIO)

Right Fielder - Baseball term (NDBD)

Rinforzando - Enforcing - Italian (WDAA)

Rise of Floor (DS)

Roof (VRA)

Rate of Flow - Medicine (MAE)

Relative to the Solvent Front - Paper chromatography - Analytical chemistry

Retardation Factor - Chromatography (DB)

Rutherfordium - Proposed name for chemical element 104 - See also Ku

Aramid Fiber - Composites

Bibliographic Reference (SAUS)

Fournier - France - ICAO aircraft manufacturer identifier (ICAO)

Franc - Monetary unit - Rwanda

RADAR Frequency (IAA)

Radial Fibers - Ear anatomy

Radial Flow (AAG)

Radiant Flux (SAUS)

Radiation Filter (SAUS)

Radiation Frequency (SAUS)

Radical Force (EA)

Radio Facilities (or Facility) (SAUS)

Radio Facility

Radio France (IAA)

Radio Frequency - Computer science (FOTI)

Radio Frequency - Transmission

Radio Frequency - Automotive engineering

Railroad Financial (EFIS)

Rainer Foundation - British (BI)

Rainfed - Agriculture

Rainform (MCD)

Raised Face (MSA)

Range-Finder - Gunnery

Rank and File - Canada (EAIO)

Rapeseed Flour - Food technology

Rapid-Fire

Rapid Firing (SAUS)

Rate Free (SAUS)

Rat Fink (SAUS)

Rating Factor (IEEE)

Reaction Forces (SAUS)

Reactive Factor (IAA)

Read Forward

Reading Function (SAUS)

Reason Foundation (EA)

Reception Fair - Radio logs

Receptive Field - of visual cortex

Receptor Floor (DB)

Recognition Factor (SAUS)

Recombination Frequency - Genetics (DOG)

Reconnaissance Fighter (MUGU)

Reconnaissance Force

Recorder File (SAUS)

Record Format (SAUS)

Recovery Forces

Recovery Forecast

Recovery Function - Emergency Management (EMA)

Recruitment for the Armed Forces - British

Rectifier Filter (SAUS)

Rectus Femoris - A muscle - Anatomy

Red Fumes (NATG)

Reducing Flame

Reef - GeoNet geographic features code (GEON)

Reef

Refer - Telegraphy (PCTE)

Reference - Online database field identifier

Reference Fuel

Reflecting Platelet (DB)

Reflight

Refunding

Refuse (SAUS)

Regional Forces - ARVN

Regional Forester - USDA Forest Service (ALAC)

Regions Financial - Company symbol

Registered Facility (SAUS)

Registered Forester (WPI)

Register File

Register Finder

Regular Force (SAUS)

Regurgitant Fraction (SAUS)

Reitland-Franklin Unit (AAMN)

Reitman-Frankel (SAUS)

Relative Flow - Rate

Relative Fluorescence - Analytical chemistry (MAE)

Relativistic Fluid (SAUS)

Release Factor (NRCH)

Release Fraction (SAUS)

Releasing Factor - Also, RH - Endocrinology

Reliability Factor

Reliability of missile Flight (SAUS)

Remote File - Computer science (VLIE)

Renal Failure - Medicine

Renal Function (SAUS)

Rent Free

Replacement Factor - Military

Replicate Form (SAUS)

Replicative Factor - or Form - Genetics

Replicative Form (SAUS)

Reply Finding - Nuclear energy (NRCH)

Reported Frequency (NTCM)

Report File (SAUS)

Report Footing (VLIE)

Reporting File

Representative Fraction

Republican Front (Ivory Coast) - Political party (PSAP)

Republique Francaise - French Republic

Research Fellow

Research Foundation (SAUS)

Reserve Fleet (SAUS)

Reserve Flight - British military (DMA)

Reserve Force

Reserve Free (SAUS)

Residual fiber - Lumber (WOHB)

Resistance Factor

Resonance Fluorescence (SAUS)

Resonance Frequency (AAEL)

Resonant Frequency (SAUS)

Resorcinol-Formaldehyde - Organic chemistry

Respectable Frere - Worshipful Brother - Freemasonry - French (ROG)

Respiratory Failure - Medicine

Respiratory Frequency (SAUS)

Response Factor

Resultant Force (SAUS)

Result Field (SAUS)

Result File (SAUS)

Resume Flag (SAUS)

Retardation Factor

Retention Factor (SAUS)

Retention File - IRS

Reticular Formation - Sleep

Retroperitoneal Fibromatosis - Oncology

Return Flow (SAUS)

Reverse Free

Revolving Fund - Finance

Rex Francorum - King of the Franks - Latin

Rheumatic Fever - Medicine

Rheumatoid Factor - Also known as IgM - Immunology

Rhinal Fissure - Anatomy

Rhodesian Front - Later, Republican Front

Ribbed Furnaces (SAUS)

Riboflavin - Biochemistry

Rice Flour (OA)

Richmond Fellowship (EAIO)

Rifampin - Also, R/AMP, RIF, RMP - Bactericide

Riffle Frequency

Riga-Fede - Syndrome - Medicine (DB)

Rigging Fixtures (MCD)

Right Field - or Fielder - Baseball

Right Foot

Right Fore (SPVS)

Right Forward - Football

Right Front

Right Fullback - Soccer

Rigid Frame - Revolver (DICI)

Rim Fire (SAUS)

Rimfire - Gunnery

Rinforzando - With Special Emphasis - Music

Ring Frame

Ripple Factor

Robert G. Ford - Air show performer (ASPC)

Rockefeller Foundation

Rocky Flats Office - Office of Environmental Management, Department of Energy - Golden, CO (DEEM)

Rodeo Foundation (EA)

Roll Film - Photography

Roll-Forward (SAUS)

Roof (WGA)

Roof Fan (OA)

Root Canal, Filing of - Dentistry (DAVI)

Rosette Formation (DB)

Rosicrucian Fellowship (EA)

Rosicrucian Fraternity (EA)

Rossair - ICAO designator (AD)

Rotating Fluid (SAUS)

Rotational Flow (SAUS)

Rotation-Free - Tire design

Rough Finish

Routes Forestieres - Forested Routes - French (BARN)

Royal Fusiliers - Military unit - British

Royal Windsor Foresters - British military (DMA)

Rubber-Free (SAUS)

Ruf - Society of Automotive Engineers auto manufacturer code for service information interchange

Ruled Feint - Paper (DGA)

Rundles-Falls - Syndrome - Medicine (DB)

Running Forward

Russian Federation - NCIC country-territory code (NCIC)

Sisters of St. Philip Neri Missionary Teachers - Roman Catholic religious order

Termination Factor - Molecular biology (QSUL)

Travelair Goteborg - ICAO designator (AD)