Definitions for "Equivalent Weight"
The weight in grams of an element, compound or ion which would react with or replace 1 gram of hydrogen; the molecular weight in grams divided by the valence.
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
The system that allows the comparison of papers having different basic sizes and basis weights. For example, 20# bond paper (which has a basic size of 17"x 22") is equivalent to 50# offset (which has a basic size of 17" x 28").