deuterium
[ doo-teer-ee-uhm, dyoo- ]
/ duˈtɪər i əm, dyu- /
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noun Chemistry.
an isotope of hydrogen, having twice the mass of ordinary hydrogen; heavy hydrogen. Symbols:2H, D; atomic weight: 2.01; atomic number: 1.
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British Dictionary definitions for deuterium
deuterium
/ (djuːˈtɪərɪəm) /
noun
a stable isotope of hydrogen, occurring in natural hydrogen (156 parts per million) and in heavy water: used as a tracer in chemistry and biology. Symbol: D or ²H; atomic no: 1; atomic wt: 2.014; boiling pt: –249.7°C
Word Origin for deuterium
C20: New Latin; see deutero-, -ium; from the fact that it is the second heaviest hydrogen isotope
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for deuterium
deuterium
[ dōō-tîr′ē-əm ]
n.
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014.heavy hydrogen hydrogen-2
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for deuterium
deuterium
[ dōō-tîr′ē-əm ]
An isotope of hydrogen whose nucleus has one proton and one neutron and whose atomic mass is 2. Deuterium is used widely as a tracer for analyzing chemical reactions, and it combines with oxygen to form heavy water. Also called heavy hydrogen See Note at heavy water.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.