| Abbreviation | Definition |
|---|---|
| BWP | British Wasted Pennies |
| BYA | Billions Of Years Ago |
| C | Calorie |
| C | Candela |
| C | Capacitance |
| C | centigrade |
| C | circumference |
| C | Coulomb |
| c. | centi~ (prefix - hundredth part) |
| c. | centi~ (prefix | hundredth part) |
| c. | Cents |
| c. | Century, Centuries |
| c. | cubic |
| c. | Cup(s) |
| c. | Cup, cups |
| C/M | Cycles per Minute |
| C/S | Cycles per Second |
| CA | Cranking Amperes |
| CAL | CALories |
| CBM | Cubic Meters |