Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Deuterium" Definition
noun
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014.
Source: American Heritage Dictionary
An isotope of hydrogen that has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen .
Source: Merriam-Webster
A stable isotope of hydrogen with a mass approximately twice that of the usual isotope.
Source: Oxford Dictionary
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