Before revision: In chemistry, equivalent weight (also known as gram equivalentgram equivalent Merriam-Webster Dictionary) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.
After revision: In chemistry, equivalent weight (also known as equivalent massgram equivalent Merriam-Webster Dictionary) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.