Etymology
The term "deuterium" is derived from the Greek word "deuteros," meaning "second."
Meaning and Origin
Deuterium is a naturally occurring isotope of hydrogen with an atomic mass number of 2. It is composed of one proton and one neutron in its nucleus, as opposed to common hydrogen (protium), which has only one proton.
The discovery of deuterium is credited to the American chemist Harold C. Urey in 1931. Urey was studying the spectrum of hydrogen gas and noticed a small shift in the spectrum that he attributed to the presence of a heavier isotope. He named this isotope "deuterium" to reflect that it was the "second" isotope of hydrogen.
Deuterium is found in small quantities (about 0.015%) in natural hydrogen. It is also found in higher concentrations in heavy water (deuterium oxide), which is used in various applications, including nuclear reactors and medical imaging.
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Etymology Middle English balaunce from Old French balance from Latin bilanx bilance
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Etymology Middle English around the 13th century betwixen Old English before the 1
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Etymology The term deuterium is derived from the Greek word deuteros meaning second
digraph etymology meaning and origin node shape box etymology label Etymolo
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Etymology Derived from the Greek δίπλωμα diploma meaning folded paper or l
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Etymology Origin Latin Meaning two Dual Etymology From Proto Indo European root
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Etymology The word duet comes from the French word duet which in turn is derived fr
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