Gamma Ray
6 dictionary results for: Gamma ray
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
gamma ray
–noun Physics.
| 1. | a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus. |
| 2. | a photon emitted by an electron as a result of internal conversion. |
| 3. | electromagnetic radiation with wavelengths shorter than approximately one tenth of a nanometer. |
[Origin: 1900–05
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Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
| gamma ray
n. Electromagnetic radiation emitted by radioactive decay and having energies in a range from ten thousand (104) to ten million (107) electron volts. |
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
WordNet - Cite This Source - Share This
| gamma ray | |
noun | |
| electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength [syn: gamma radiation] |
WordNet® 3.0, © 2006 by Princeton University.
The American Heritage Science Dictionary - Cite This Source - Share This
| gamma ray
A stream of high-energy electromagnetic radiation given off by an atomic nucleus undergoing radioactive decay. Because the wavelengths of gamma rays are shorter than those of x-rays, gamma rays have greater energy and penetrating power than x-rays. Gamma rays are emitted by pulsars, quasars, and radio galaxies but cannot penetrate the Earth's atmosphere. See more at radioactive decay. |
The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
American Heritage Stedman's Medical Dictionary - Cite This Source - Share This
gamma ray n.
Electromagnetic radiation emitted from the nucleus of an atom by radioactive decay and having energies in a range from ten thousand (104) to ten million (107) electron volts.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Merriam-Webster's Medical Dictionary - Cite This Source - Share This
Main Entry: gamma ray
Function: noun
: a photon emitted spontaneously by a radioactive substance; also : a high-energy photon —usually used inplural
Main Entry: gamma ray
Function: noun
: a photon emitted spontaneously by a radioactive substance; also : a high-energy photon —usually used inplural
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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