| Abbreviation | Definition |
|---|---|
| STDEV | Standard Deviation |
| STE | Stochastic Taylor Expansion |
| STEAM | Science Technology Engineering Art and Mathematics |
| STEM | science technology engineering mathematics |
| STEM | Six Through Eight Mathematics |
| STF | Symmetric Trace Free |
| STLC | Simply-Typed Lambda-Calculus |
| STLMC | St. Louis Mathematics Congress |
| STLN | Structured Total Least Norm |
| STM | Simple Tree Manipulation |
| STME | Science Technology and Mathematics Education |
| STREAM | Science Technology Religion Engineering Arts and Mathematics |
| STREAM | science technology research engineering arts and mathematics |
| STS | Steiner Triple System |
| SU | Sample Uniques |
| SU | Sum of Units |
| SUMMA | Strengthening Underrepresented Minority Mathematics Achievement |
| SUP | SUPremum |
| SUS | Stochastic Universal Sampling |
| SVC | small-volume corrected |