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irradiation

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ir⋅ra⋅di⋅a⋅tion

  [i-rey-dee-ey-shuhn]
Use irradiation in a Sentence
–noun
1. the act of irradiating.
2. the state of being irradiated.
3. intellectual or spiritual enlightenment.
4. a ray of light; beam.
5. Optics. the apparent enlargement of an object when seen against a dark background.
6. the use of x-rays or other forms of radiation for the treatment of disease, the making of x-ray photographs, the manufacture of vitamin D, etc.
7. exposure or the process of exposure to x-rays or other radiation.
8. Physics. irradiance.
Origin:
1580–90; < LL irradiātiōn- (s. of irradiātiō). See ir- 1 , radiation
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ir⋅ra⋅di⋅ance

  [i-rey-dee-uhns]
–noun Physics.
incident flux of radiant energy per unit area.
Also, irradiation.

Origin:
1660–70; ir- 1 + radiance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To irradiation
ir·ra·di·a·tion   (ĭ-rā'dē-ā'shən)   
n.  

  1. The act of exposing or the condition of being exposed to radiation.

  2. The use or application of ionizing radiation, especially in medical treatment and for the sterilization or preservation of food.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ir·ra·di·ance
Pronunciation: ir-'Ad-E-&n(t)s
Function: noun
: the density of radiation incident on a given surfaceusually expressed in watts per square centimeter or square meter

Main Entry: ir·ra·di·a·tion
Pronunciation: ir-"Ad-E-'A-sh&n
Function: noun
1 a : the radiation of a physiologicallyactive agent from a point of origin within the body; especially : the spread of a nervous impulse beyond the usual conduction path b : apparent enlargement of a lightor bright object or surface when displayed against a dark background
2 a : exposure to radiation (as ultraviolet light, X rays, or alpha particles) b : applicationof radiation (as X rays or gamma rays) especially for therapeutic purposes
3 : IRRADIANCE
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

irradiation ir·ra·di·a·tion (ĭ-rā'dē-ā'shən)
n.

  1. Exposure or subjection to the action of radiation for diagnostic or therapeutic purposes.

  2. Medical treatment by exposure to radiation.

  3. The spread of a nervous impulse beyond the usual path of conduction.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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