| Acronym | Meaning |
 | FIFO | First In |
 | SI | Slovenia (ISO 3166 And FIPS 10-4 Country Code Digram) -Socialist International - Sports Illustrated - Syst?me International (French |
 | TM | Technical Manual - Theatre Missile - Thematic Mapper -trademark (often Written In Small Superscript Type: TM Or ?) -Turing Machine -Turkmenistan (ISO 3166 Digram) |
 | UM | U.S. Minor Outlying Islands (postal Symbol; ISO 3166 Digram) |
 | AFOSR | U.S. Air Force Office Of Scientific Research |
 | ISEF | Intel International Science And Engineering Fair |
 | PLAF | Product Line Architecture Framework |
 | EVA | Extra-Vehicular Activity |
 | FASCAM | Field Artillery Scatterable Mines |
 | YA | Yottayear |