- SI
- Silicon (Academic & Science » Chemistry)* Slovenia (Regional » Countries)* Stand In (Community » Media)* Shift In (Computing » General)* Something In (Miscellaneous » Food)* Special Interest (Governmental » Military)* Singhalese (Regional » Language Codes (2 Letters))* Sports Illustrated (Community » Media)* Staten Island (Governmental » State & Local)* Smithsonian Institution (Academic & Science » Ocean Science)* System Integration (Governmental » Military)* Sandwich Islands (Regional » Countries)* International System (Governmental » Transportation)* Systeme International (Academic & Science » Mathematics)* Sas Institute (Academic & Science)* Semi-Insulating (Academic & Science » Electronics)* International System of Units (Academic & Science » Ocean Science)* Signal Integrity (Academic & Science » Electronics)* System Integrator (Business » General)* System International (Miscellaneous » Unit Measures)* Self Inflicted (Community » Law)* Self Inflicted (Medical » Physiology)* Smithsonian Institute (Governmental » US Government)* Servicio de Investigación (International » Spanish)* Self Injury (Medical » Physiology)* Supplemental Instruction (Governmental » US Government)
Abbreviations dictionary. 2012.