| 1. | the state or quality of being potent. |
| 2. | power; authority. |
| 3. | efficacy; effectiveness; strength. |
| 4. | capacity to be, become, or develop; potentiality. |
| 5. | a person or thing exerting power or influence. |
| 6. | Mathematics. cardinal number (def. 2). |
| 1. | Also called cardinal numeral. any of the numbers that express amount, as one, two, three, etc. (distinguished from ordinal number ). |
| 2. | Also called potency, power. Mathematics. a number or symbol analogous to the number of elements in a finite set, being identical for two sets that can be placed into one-to-one correspondence: The cardinal number of the set a 1, a2, … an is n. |

potency po·ten·cy (pōt'n-sē)
n.
The quality or condition of being potent.
The pharmacological activity of a compound.