Dalton
Science› Biotechnology and Genetics
Food Biotechnology
A unit of measurement equal to the mass of a hydrogen atom, 1.67 x 10E-24 gram/L (Avogadro's number).
(Abbreviation: Da). A unit of atomic mass roughly equivalent to the mass of a hydrogen atom. Used as to express molecular weight, which for biological macromolecules is usually in the range kilo- (kDa) to megaDaltons (MDa).