| Abbreviation | Definition |
|---|---|
| CLS | Closed Linear Span |
| CLS | Conditional Least Squares |
| CLS | Constrained Least Squares |
| CLT | Central Limit Theorem ( probability theory) |
| CLT | Compare Like Terms |
| CLUB | Consistent Least Upper Bounds |
| CLXXX | Roman numerals for 180 |
| CM | Canoical Matrix |
| CM | Championship Manager |
| CM | Chosen Multiplier |
| CM | Companion Matrix |
| CM | Complex Multiplication |
| CM | Confidence Measure |
| CM | Confidence Measurement |
| CMA | comprehensive meta-analysis |
| CMA | Constant Modulus Algorithm |
| CMA | Covariance Matrix Adaptation |
| CMAM | Computational Methods in Applied Mathematics |
| CMC | California Mathematics Council |
| CMC | Concave Modulus of Continuity |