# Definitions and Synonyms of *equilibrium constant* | Another word for *equilibrium constant* | What is *equilibrium constant? *

*Definition 1: (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction) - [noun denoting quantity]*

*(**equilibrium constant* is a kind of ...) a number representing a quantity assumed to have a fixed value in a specified mathematical context

*equilibrium constant*is a kind of ...) a number representing a quantity assumed to have a fixed value in a specified mathematical context

### (... is a kind of

*"the velocity of light is a constant"*