What is what does equivalent mean?

Equivalent means equal or similar in value, purpose, or meaning. It can be used to describe two things that have the same amount or effect, or two ideas that are equally important or significant. In math, equivalent can refer to two expressions or equations that have the same value or solution. In chemistry, it can refer to the amount of a substance that can react with a certain amount of another substance. In general, when two things are equivalent, they can be substituted for each other without changing the overall outcome or meaning.