| Abbreviation | Definition |
|---|---|
| CRE | Calculator Ready Equation |
| CRI | Composite Ranking Index |
| CRI | Corner Reduced Integration |
| CRIME | Centre for Research in Mathematics Education |
| CRMC | Columbus Regional Mathematics Collaborative |
| CRME | Center for Research in Mathematics Education |
| CRME | Centre for Research in Mathematics Education |
| CRO | Center Rotate Offset |
| CRS | Combinatory Reduction System |
| CRT | Chinese Remainder Theorem |
| CRT | Criterion Referenced Test |
| CRTT | Computational Representational Theory Of Thought |
| CRUSH | Controlled Replication Under Scalable Hashing |
| CRV | Constant Random Variable |
| CSA | Cross Sectional Area |
| CSA | Curved Surface Area |
| CSAM | College of Science and Mathematics |
| CSC | Co-Secant |
| CSCH | Hyperbolic Co-Secant |
| CSEM | Computational Science Engineering and Mathematics |