sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| China Europe Express | *** |
| Catholic Educational Exhibit | *** |
| Command Engine X | ** |
| Casa de Espanol Xelaju | ** |
| Clinical Evaluation Exercises | ** |
| Charge Exchange Experiments | ** |
| Crystal Extraction Experiment | * |
| Civil Engineer Readiness Emergency Management Flight | * |