Chemistry Abbreviations and Acronyms

1. SEW
   Site Electron-density Wave
2. SIS
   Scanning Imaging Spectrometer
3. SIS
   Styrene Isoprene Styrene Block Copolymer
4. SIS
   Safety Injection System
5. SIS
   Stepwise Isothermal Segregation
6. spT
   Selective Polarization-transfer
7. spT
   Standard Penetration Test
8. STR
   Short Tandem Repeat
9. TAS
   Total Alkali versus Silica
10. TAS
    Thermal Analyzer System
11. TAS
    Total Analysis Systems
12. U
    Unknown
13. U
    Uranium
14. U
    Micro
15. U
    Heat Transfer Coefficient
16. U
    Undetectable
17. AAR
    Accumulation-area Ratio (for Glaciers)
18. AAR
    Alkali-aggregate Reaction
19. AAU
    Alpha Acid Unit
20. AAU
    Amendment To Allege Use

Last updated: August 16, 2021 — Total entries: 20,939