Acronyms & Abbreviations

The definition of SIS is:

Saber Airlines

Sack Induction Station

Safeguards information system

Safety injection signal

Safety Injection Symbol

Safety injection system

Safety Instrument System

Safety Instrumented System

Safety Instrumented Systems

SAIL Interface System

Saline infusion sonography

Saline infusion sonohysterography

SAN Integration Server

Saratoga Independent School

Satellite intercept system

Satellite Interception System

Satellite Interceptor System

Saturated Interference Spectroscopy

Scanning Imaging Spectrometer

Schengen Information System

School Internet Server

School of Industrial Science

School of Information Studies

School of Informational Studies

Science Information Service

Science Information Services

Science Information System

Science Information Systems

Science Instrument Software

Science Instrument System

Science Instruments

Science Integration Staff

Scientific Information System

Scientific Instruction Set

Scientific Instrument Services

Scientific Instrument Simulation

Scientific Instrument Society

Scientific Instruments

Secret Intelligence Service

Secretarial Information System

Secretory immune system

Secure Interface System

Sefton Infants School

Selected Inventor Service

Selected ion storage

Selective Identification System

Selective Imagery System

Selective Inquiry System

Selective ion storage

Self-ionized sputter

Semantic Indexing System

Semiconductor-Insulator-Semiconductor

Semiconductor-Isolator-Semiconductor

Semiconductor/Isolator/Semiconductor

Senior Intelligence Service

Serial Input Special

Serotonin irritation syndrome

Server Intelligent Storage

Service Information System

Service Interphone System

Shaft instrumentation system

Shared information systems

Shared Internal Storage

Sharps injuries

Shock Isolation System

Shoreline Independent Study

Short Interval Scheduler

Short-Interval Scheduling

Shorter Intervall Scheduling

Shoulder impingement syndrome

Shuttle Information Service

Shuttle Information System

Shuttle Integration Schedule

Shuttle Interface Simulator

Side Impact Sensor

SIDE IMPACT SIMULATION

Signal in Space

Signal Intelligence Service

Signal intensities

Signalling Interworking Subsystem

Signals Intelligence Section

Signals Intelligence Service

Significant Indications Summary

Silent infarcts

Silicon Integrated Systems

Siltstone

Silver infarct staining

Simian sarcoma

Simms

Simple infertility score

Simpson Middle School

Simulation Induced Sickness

Simulation Interface Subsystem

Simulation Interface System

Simulator Interface System

Simulator-induced syndrome

Single Image Stereogram

Single Image Stereograms

Single Instance Storage

Single Instance Store

Single Integrated Simulation

Single Interceptor Satellite

Sister

Site integrated schedule

Skin immune system

Small intestinal submucosa

Small intestine submucosa

Smart Icing System

Snickering in silence

Social information system

Social Information Systems

Social Insurance Substitute

Social Intelligence Server

Social Interview Schedule

Society for Interdisciplinary Studies

Society for Italian Studies

Software Implementation Specification

Software Information Services

Software Integrated Schedule

Software Intensive System

Software Intensive Systems

Software Interface Specification

Software-Intensive System

Solar Imaging Suite

Solar Isotope Separator

Solar Isotope Spectrometer

Somerset Independent Schools

Sound-in-Sync

Sound-In-Synchronisation

Southern Information Systems, Inc.

Space and Intelligence Systems

Space Information Systems

Space Intelligence System

Space inventory system

Spacecraft Interface Simulator

Spade Integrated Simulator

Spatial Information System

Spatial Information Systems

Special Industrial Services

Special Information System

Special Information Systems

Special Inspection Services

Special Intelligence Service

Special Intelligence Support

Special Intelligence System

Special Interest Section

Special inventory system

Special isotope separation

Specialized Information Services

Specialized information system

Species Impact Statement

Spontaneous interictal spike

Springtime In Sweden

Staff Information System

Stage Interface Simulator

Standard Indexing System

Standard instruction set

Standard Interface Set

Standard Interface Specification

Standardiseiringskommissionen I Sverige

Standardisering-skommissionen In Sverige

Standardiseringen I Sverige

Standardiseringskommissionen i Sverige

Standardiseringskommissionen Institut Sverige

Standards Information Service

Standards Information System

Stat in School

State Information Service

Station Information System

Statistical Information System

Statistical inventory sampling

Status Indicators

Statutory Instruments

Stay in School

Steam Inerting System

Stellen Informations Service

Stellen-Informations-Service

Stepwise isothermal segregation

Sterile injectable solution

Sterile injectable suspension

Stimulation indices

Storeroom Inventory System

STOW Infrastructure System

Strategic Imaging Systems

Strategic Information Strategy

Strategic Information System

Strategic Intelligence Summary

Strategic Intelligence Systems

Strategic Interplanetary System

Strategy Implementation Study

Stress-Induced Segregation

Stroke Impact Scale

Strom Inerting System

Structural Interaction Service

Structure Information Store

Structured Information Store

Structured Interaction Service

Structured Interaction Services

Structured Interaction System

Structured Interview for Schizotypy

Student Information Services

Student Information System

Student Information Systems

Stuff I've Seen

Styrene isoprene styrene

Styrene-Isoprene-Styrene

Sub-national Innovation System

Subacromial impingement syndrome

Subscriber Identity Security

Subsystem Interface Specifications

Suicidal Intent Scale

Suicide Intent Scale

Superannuation Industry Act

Superannuation Industry Supervision

Superconducting image surface

Superconducting-Insulating Superconducting

Superconductivity information system

Superconductor-insulator-superconductor

Superconductor-Isolator-Superconductor

Supersymmetry and Integrable Systems

Supplemental information seeking

Supplemental Information Sheet

Supplier Identification System

Supplier Information Service

Supplier Information System

Supplies Information Service

Support Information System

Supports Intensity Scale

Surgical Infection Society

Surgical Infections Society

Surgical information system

Surgical Information Systems

Surround Imagery for Station

Swarm Intelligence Symposium

Swedish Standards Institute

Switching Inhibition Signal

Symposium in Information Studies

System Identification System

System Installation Suite

System Instruction Sheet

System Integration and Software

System Integration and Support

System Integrators

System Interface Sets

System Interface Specification

System internal specifications

System Interrupt Supervisor

Systems Integration Schedule

Systems Integrators