nuclear energy

noun
energy released by reactions within atomic nuclei, as in nuclear fission or fusion.
Also called atomic energy.

Origin:
1925–30

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
nuclear energy
 
—n
Also called: atomic energy energy released during a nuclear reaction as a result of fission or fusion

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Nuclear energy is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
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American Heritage
Science Dictionary
nuclear energy  

  1. The energy released by the nucleus of an atom as the result of nuclear fission, nuclear fusion, or radioactive decay. The amount of energy released by the nuclear fission of a given mass of uranium is about 2,500,000 times greater than that released by the combustion of an equal mass of carbon. And the amount of energy released by the nuclear fusion of a given mass of deuterium is about 400 times greater that that released by the nuclear fission of an equal mass of uranium. Also called atomic energy.

  2. Electricity generated by a nuclear reactor.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

nuclear energy definition


Energy obtained from nuclear reactions.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Spending on nuclear energy continues an ongoing move toward small, modular
  reactors.
Likewise, all money spent on nuclear energy, hydropower and geothermal power.
Nuclear energy is right in the middle of the debate.
That's particularly so with such visceral issues as nuclear energy.
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