SCIENCE|natural and applied sciences|physical sciences
- tromuisce Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- ocsaíd deoitéiriam Reference "Rialachán (AE) Uimh. 374/2014 maidir le dleachtanna custaim ar earraí de thionscnamh na hÚcráine a laghdú nó a dhíchur, CELEX:32014R0374/GA ;Faomhadh an téarma seo mar chuid de Thionscadal Lex"
- ga
- Deuteriumoxid | schweres Wasser | D20
- de
- deuterium oxide | D2O | DO | heavy water | HW
- en
- Definition water in which the hydrogen in the molecules is partly or wholly replaced by the isotope deuterium, used especially as a moderator in nuclear reactors Reference "Oxford Dictionaries > British & World English > heavy water [2.10.2015]"
- Comment Because of the very low neutron absorption cross-section of deuterium, heavy water makes an excellent moderator and is used in, for example, CANDU and SGHWR nuclear reactors. It is present in ordinary water at one part in about 5000.