deuterium
Cross references: 1. heavy hydrogen deu.te.ri.um \d(y)u:-'tir-e--*m\ n [NL, fr. Gk deuteros second] : the hydrogen isotope that is of twice the mass of ordinary hydrogen and that occurs in water
Cross references: 1. heavy hydrogen deu.te.ri.um \d(y)u:-'tir-e--*m\ n [NL, fr. Gk deuteros second] : the hydrogen isotope that is of twice the mass of ordinary hydrogen and that occurs in water