heavy water (English) [ IPA: ˈheviː ˈwɔtər ASM: হেভি ৱাটাৰ]
Contributed by: Bikram M Baruah on 2008-11-15
1. (Material Noun-Neuter) Water containing deuterium or heavy hydrogen instead of normal hydrogen (symbol D2O); used as a moderator in nuclear reactors. Deuterium is a stable isotope of hydrogen formed of one proton and one neutron in each atom.