SEARCH Articles Figures Tables Angstrom unit defined Angular momentum defining units Atomic mass units defined British thermal unit defined Constitutional repeating unit, defined Constitutional unit, defined Defining the Units of Analysis Formula units defined Gray, unit defined Monomer unit, defined Monomer units defining Monomeric base unit, defined Monomeric unit, defined Physiologically defined units Process simulation user-defined unit operations Resistivity: defined, 464 units Sievert, unit defined Unit activity, defined Unit cell defined Unit cell, defining vectors Unit cell, defining vectors INDEX User-defined unit operations Valence unit, defined