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
Derived Forms
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.
The €700 million International Fusion Materials Irradiation Facility-Demo Oriented Neutron Source, funded by the European Union, will allow researchers to test the performance of neutron-resistant materials.
From Science Magazine • Oct. 11, 2023
Such a facility—a particle-accelerator-based project called the International Fusion Materials Irradiation Facility–Demo Oriented Neutron Source—should begin operating in Granada, Spain, in the early 2030s.
From Scientific American • Jun. 5, 2023
Irradiation by red light converts the photoreceptor phytochrome to its far-red light-absorbing form—Pfr.
From Textbooks • Jun. 9, 2022
Irradiation of mobile devices with ultraviolet light is not.
From Slate • Jan. 11, 2019
Irradiation in general has been defined as the lateral diffusion of nervous stimuli beyond the actual stimulus.
From Visual Illusions Their Causes, Characteristics and Applications by Luckiesh, Matthew
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.
