deuterium, heavy hydrogen
(noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
Source: WordNet® 3.1
deuterium (plural deuteriums)
(isotope) An isotope of hydrogen formed of one proton and one neutron in each atom - 21H.
An atom of this isotope.
• heavy hydrogen
• D (chemical symbol)
• hydrogen
• (isotopes of hydrogen): protium, tritium, quadrium
Source: Wiktionary
6 May 2024
(noun) freedom of choice; “liberty of opinion”; “liberty of worship”; “liberty--perfect liberty--to think or feel or do just as one pleases”; “at liberty to choose whatever occupation one wishes”
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