What does SSR stand for?

RADAR Picket Submarine - Navy symbol

SACEUR - Supreme Allied Commander, Europe Strategic Reserve - Army (NATG)

Safe Secure Railcar - Army

Safety Services Representative - Red Cross

Saskatchewan Research Council, Saskatoon, Saskatchewan - Library symbol - National Library of Canada (NLC)

SATCOM Station Reports (MCD)

Satellite Signal Receiver (CCCA)

Satellite Situation Report (AAG)

S-Band Shuttle Return (SSD)

Schedule Shipment Record (MCD)

Schedule Status Report (ACAE)

Scindia State Railway - Indian Railway (TIR)

Scratched Surface Recording (IAA)

Seal Steam Regulator - Nuclear energy (NRCH)

Sea Star Boat - NCIC boat manufacturer code (NCIC)

Secondary Surveillance RADAR

Secondary Surveyance Radar (SAUS)

Secondary System Relief - Environmental science (COE)

Security Services - Vancouver Stock Exchange symbol

Security Survey Report - Nuclear energy

Seek-Storm RADAR

Selective Serial Repeat (SAUS)

Selective Serotonin Re-ceptake Indicator - Medicine

Selenium Stack Rectifier

Self Screening Repeater (SAUS)

Self-Sufficiency Ratio - Business term

Semi-automatic Sniping Rifle - Police and security equipment

Sempati Air PT - Indonesia - ICAO designator (FAAC)

Senior Site Representative (SAUS)

Separate Superheater Reactor - Nuclear energy

Shipbuilding and Ship Repair - Department of Employment - British

Shop Support Request - NASA (NASA)

SIA - Semiconductor Industry Association Statistical Review - A publication (EAAP)

Signal-Sequence Receptor - Biochemistry

Simple Sequence Repeat - Genetics

Simple Sequence Repeats - Genetics

Single Signal Receiver - Telecommunications (IAA)

Sink to Source Relation

Sisters Island, AK - Location identifier - FAA (FAAL)

Site Safety Report (SAUS)

Site-Specific Recombination - Medicine (EDAA)

Site Suitability Report - Nuclear energy (NRCH)

Slate Shingle Roll (SAUS)

Slate-Shingle Roof - Technical drawings

Slow Strain Rate - Tensile test

Smart Switch Router (GART)

Societe Suisse de Radiodiffusion et Television - Radio and television network - Switzerland

Society for the Study of Reproduction (EA)

Society of Skeletal Radiology - Association (EA)

Software Safety Release

Software Specification Review

Solid State Radar (SAUS)

Solid-State Reaction (SAUS)

Solid State Recrystalization (SAUS)

Solid-State Refining (SAUS)

Solid-State Regulator (SAUS)

Solid State Relay (IEEE)

Somatosensory Response - Medicine (EDAA)

Source/Sink Request (SAUS)

Southern Star Resources - Toronto Stock Exchange symbol - Canada

South Staffordshire Regiment - Military unit - British

Soviet Socialist Republic

Specialised System Requirement (SAUS)

Special Scientific Report

Special Service Requirement (TRID)

Special Services Request - Travel industry

Special Survey of Refrigerated Machinery - Lloyd's Register of Shipping (DS)

Specification Status Report - Nuclear Regulatory Commission (GFGA)

Speed/Size Ratio (SAUS)

Spin-Spin Relaxation (SAUS)

Spin-Stabilized Rockets

Spotted Swine Record - Later, National Spotted Swine Record (EA)

SS Roadster - NCIC car model code

Staff-Student Ratio (DET)

Staff Support Room - NASA

Standby Supply Relay - Telecommunications (IAA)

State Society Relations (SAUS)

Static Shift Register

Static Squelch Range

Stationary Stores Requisition (SAUS)

Station Set Requirement - NASA (NASA)

Statistical Summary Report (AAG)

Steady-State Rate - of production - Medicine

Stock Status Report

Storage Select Register (SAUS)

Store Search Register (SAUS)

Stretched Surface Recording (SAUS)

Students for Social Responsibility (EA)

Subsea Release (SAUS)

Subsynchronous Resonance (IEEE)

Summarized Spares Requirement

Summary Subcontract Report (SAUS)

Sum of Squares of Residuals (SAUS)

Sum of the Squared Residuals - Econometrics

Supplemental Security Income Record (SAUS)

Supplemental Security Record - Social Security Administration (GFGA)

Supplementary Statement Required - Civil Service

Supply Support Request - or Requirement - Military (AFM)

Support Staff Rooms (SAA)

Support System Requirement (SAUS)

Surface Search RADAR (SAA)

Surface Slip Resistance

Surgical Supply Room - Medicine (EDAA)

Susara - Romania - Seismograph station code, US Geological Survey (SEIS)

Sustained Silent Reading - Education (AEE)

Swiss-French Sign Language - Language code (ETLW)

Switching Selector Repeater (PDAA)

Sympathetic Skin Response (SAUS)

Synchronous Stable Relaying (IEEE)

System Requirements Review (SAUS)

System/Segment Review (SAUS)

System Software Review (SAUS)

System Specification Review (SAUS)

System Status Recording (SAUS)

System Status Report

System Status Review

System Study Requirement (AAG)

System Subroutines (SAA)

System Support Record

System Support Request (SAUS)

System Support Resources (ACAE)

Uzbek Soviet Socialist Republic - Political party (PSAP)