Dictionary

equivalent

-adjective

1. similar or identical in value, meaning or effect; virtually equal
2. (mathematics) of two sets, having a one-to-one relationship
3. (mathematics) relating to the corresponding elements of an equivalence relation
4. (chemistry) having the equal ability to combine
5. (cartography) of a map, equal-area

-noun

1. anything that is virtually equal to another
2. (chemistry) an equivalent weight