What does siu stand for?

Signal Interface Unit (NAKS)

Sailors International Union (SAUS)

Saturn Instrumentation - NASA

Seafarers International Union

Seafarers' International Union of North America - AFL-CIO

Seamens International Union (SAUS)

Sensor Interface Unit (SAUS)

Sequence Initiate Update

Serial Interface Unit (SAUS)

Sets in Use - Television rating (WDMC)

Shiloh Resources Ltd. - Vancouver Stock Exchange symbol

Side-In Unit (SAUS)

Sidewinder Interface Unit (SAUS)

Signaling Interface Unit (TELEC)

Signal Interface Unit (MCD)

Significant Industrial Use

Simple Integer Unit

Simulation Interface Unit - Military technology (DDF)

Simushir - Former USSR - Seismograph station code, US Geological Survey (SEIS)

Sinagen - Language symbol (ETLW)

Situate - Telegraphy (PCTE)

Slide-In Unit - Telecommunications (TEL)

Social Investigation Unit (SAUS)

Societe Internationale d'Urologie - International Society of Urology - ISU - Paris, France (EAIO)

Sonobuoy Interface Unit - Navy (CAAL)

Southern Illinois University

Special Investigating Unit (SAUS)

Special Investigations Unit - Insurance

Standard Interface Unit (SAUS)

Station Interface Unit - Computer science (ECII)

Stimulus Isolation Unit (SAUS)

Storage Interface Unit (SAUS)

Subscriber Interface Unit (SAUS)

Subscriber line Interface Unit

Systeme International d'Unites - International System of Units - Also, SI

System Identification Unit (VLIE)

System Input Unit (VLIE)

System Integration Unit (IAA)

System - or Subsystem Interface Unit

System Interface Units (READ)