radioactive
Use Radioactive in a sentence
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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To radioactive
Collins
World English Dictionary
radioactive (ˌreɪdɪəʊˈæktɪv) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| exhibiting, using, or concerned with radioactivity | |
| radio'actively | |
| —adv | |
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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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Radioactive
is always a great word to know.
So is zedonk. Does it mean:
| the offspring of a zebra and a donkey. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
Etymonline
Word Origin & History
radioactive
1898, from Fr. radio-actif, coined by Pierre and Marie Curie from radio-, comb. form of L. radius (see radiation) + actif (fem. active) "active."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
radioactive ra·di·o·ac·tive (rā'dē-ō-āk'tĭv)
adj.
Of or exhibiting radioactivity.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Cultural Dictionary
radioactive definition
A descriptive term for a material made up of atoms in which radioactivity occurs.
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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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
Radioactive abscess scan uses a radioactive substance to look for abscesses in the body.
They first cut an air-vent valve from the reactor, releasing some hydrogen gas and a few last wisps of radioactive steam.
In general, asteroids are heated by the decay of radioactive atoms scattered throughout their insides.
Radioactive debris scattered by the explosions is the biggest hazard for workers at the plant.
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