irradiation
Americannoun
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the act of irradiating.
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the state of being irradiated.
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intellectual or spiritual enlightenment.
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a ray of light; beam.
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Optics. the apparent enlargement of an object when seen against a dark background.
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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.
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exposure or the process of exposure to x-rays or other radiation.
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Physics. irradiance.
noun
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the act or process of irradiating or the state of being irradiated
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the apparent enlargement of a brightly lit object when it is viewed against a dark background
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a shaft of light; beam or ray
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med
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the therapeutic or diagnostic use of radiation, esp X-rays
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exposure of a patient to such radiation
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another name for radiation irradiance
Other Word Forms
- postirradiation adjective
Etymology
Origin of irradiation
First recorded in 1580–90, irradiation is from the Late Latin word irradiātiōn- (stem of irradiātiō ). See ir- 1, radiation
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In addition to demonstrating how electron irradiation drives polymerization and restructuring, the experiment revealed TEM's potential for studying controlled reactions in other organic molecules as well.
From Science Daily • Oct. 29, 2025
His achievement may permanently reshape how scientists use electron beams, offering a clearer window into the chemical transformations that take place under irradiation.
From Science Daily • Oct. 29, 2025
"Looking years into the future, there's a possibility that ion irradiation can be used to deliberately introduce defects into materials and manipulate them," he said.
From Science Daily • May 17, 2024
Aiming to shorten recovery times, an Osaka Metropolitan University-led research group is focusing on plasma irradiation as a treatment method to speed up bone healing.
From Science Daily • Apr. 16, 2024
This new phase of research required the irradiation of uranium on a heroic scale, with the goal of producing enough 94 to perform the necessary experiments.
From "Big Science" by Michael Hiltzik
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
