NCC (nanocrystalline cellulose) is an acronym that can be used interchangeably with CNC (cellulose nanocrystals) to identify a type of cellulose nanomaterial that is produced by chemically breaking down various types of cellulose fibers into crystalline nanoparticles. Although the names are interchangeable, CNC (cellulose nanocrystals) is the official appellation since it follows the IUPAC and ISO nomenclature guidelines.