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Definition of irradiation
1 : exposure to radiation (such as X-rays or alpha particles)
2 : the application of radiation (such as X-rays or gamma rays) for therapeutic purposes or for sterilization (as of food); also : partial or complete sterilization by irradiation
From the M-W Editors
Recent Examples of irradiation from the Web
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A Sri Lankan public health official,left, points out Mosquito lava in a bottle during a Dengue fever irradiation work in Colombo, Sri Lanka, Tuesday, July 4, 2017.
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University lab technicians treated the fish skin with various sterilizing agents, and sent it to São Paulo for irradiation to kill viruses before packaging and refrigeration.
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University lab technicians treated the fish skin with various sterilizing agents, and sent it to São Paulo for irradiation to kill viruses before packaging and refrigeration.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'irradiation'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of irradiation
1901
IRRADIATION Defined for Kids
irradiation
playDefinition of irradiation for Students
: exposure to radiation
Medical Dictionary
irradiation
playMedical Definition of irradiation
1a: the radiation of a physiologically active agent from a point of origin within the body; especially : the spread of a nerve impulse beyond the usual conduction pathb: apparent enlargement of a light or bright object or surface when displayed against a dark background
2a: exposure to radiation (as X-rays or alpha particles)b: application of radiation (as X-rays or gamma rays) for therapeutic purposes or for sterilization (as of food)
3: irradiance
Learn More about irradiation
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See words that rhyme with irradiation Spanish Central: Translation of irradiation Nglish: Translation of irradiation for Spanish speakers Britannica.com: Encyclopedia article about irradiation
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