| calculus | |
| 1. n. (dated) Calculation; computation. | |
| 2. n. (mathematics) Any formal system in which symbolic expressions are manipulated according to fixed rules. | |
| lambda calculus | |
| predicate calculus | |
| 3. n. (often, definite, the calculus) Differential calculus and integral calculus considered as a single subject; analysis. | |
| 4. n. (medicine) A stony concretion that forms in a bodily organ. | |
| renal calculus ( = kidney stone) | |
| 5. n. (dentistry) Deposits of calcium phosphate salts on teeth. | |
| 6. n. A decision-making method, especially one appropriate for a specialised realm. | |
