IUPAC Compendium of Chemical Terminology

The Compendium is popularly referred to as the "Gold Book", in recognition of the contribution of the late Victor Gold, who initiated work on the first edition.

It is one of the series of IUPAC "Colour Books" on chemical nomenclature, terminology, symbols and units, and collects together terminology definitions from IUPAC recommendations already published in Pure and Applied Chemistry and in the other Colour Books.

An interactive online version of the Compendium is freely available for searching from the IUPAC website.