deuterium

(do̵̅o̅ tirē əm, dyo̵̅o̅-)

noun

a hydrogen isotope used in nuclear reactors, accelerators, etc.: symbol, D; at. wt., 2.0141

Origin: ModL: see deutero- & -ium

See deuterium in American Heritage Dictionary 4

noun
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014.

Origin:

Origin: deuter(o)-

Origin: + -ium

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