Open English Wordnet
Nouns
(n)equivalenta person or thing equal to another in value or measure or force or effect or significance etc“send two dollars or the equivalent in stamps”
(n)equivalent, equivalent weight, combining weight, eqthe atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen
Adjectives
(s)equivalent, tantamountbeing essentially equal to something“a wish that was equivalent to a command”, “his statement was tantamount to an admission of guilt”