| Abbreviation | Definition |
|---|---|
| TIMSS | Trends in International Mathematics and |
| TIMSS | Trends in International Mathematics and Science Study |
| TIMSS | Trends in Mathematics and Science Study |
| TJM | Tokyo Journal of Mathematics |
| TJM | Tsukuba Journal of Mathematics |
| TL | Tree List |
| TL | Trigram Lines |
| TLN | Total Least Norm |
| TLNM | Tangent Linear Normal Model |
| TLS | Total Least Squares |
| TLY | Tally |
| TLZ | Time Line Zero |
| TM | Threshold Method |
| TMAX | Total Maximum |
| TME | The Mathematics Educator |
| TMTC | Too Many To Count |
| TMU | Time Measurement Unit |
| TN | Third Number |
| TN | Trillion |
| TNF | Third Normal Form |