Definitions of equivalent:

  • noun:   the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen
  • noun:   a person or thing equal to another in value or measure or force or effect or significance etc
    Example: "Send two dollars or the equivalent in stamps"
  • adjective:   being essentially equal to something
    Example: "A wish that was equivalent to a command"
  • adjective:   equal in amount or value
    Example: "Equivalent amounts"