IUPAC Definition (Chemistry)

The IUPAC sets the standards of atomic weights that appear on the periodic table.
The IUPAC sets the standards of atomic weights that appear on the periodic table. Ty Milford / Getty Images

IUPAC Definition: IUPAC is an acronym for International Union of Pure and Applied Chemistry. The IUPAC is the recognized authority for chemical standards of nomenclature, measurements, and atomic mass values.

Also Known As: International Union of Pure and Applied Chemistry