radiation
noun
ra·di·a·tion
ˌrā-dē-ˈā-shən 
1
a
: the action or process of radiating
b
: the process of emitting radiant energy in the form of waves or particles
c(1)
: the combined processes of emission, transmission, and absorption of radiant energy
(2)
: the transfer of heat by radiation compare conduction, convection
2
a
: something that is radiated
b
: energy radiated in the form of waves or particles
3
: radial arrangement
Examples of radiation in a Sentence
She was exposed to high levels of radiation.
He goes in for radiation next week.
the sun's radiation of heat
Recent Examples on the Web
Maintained in this state of wild vexation by volleys of planetary radiation—
what if a genie replaced your phone
with the club of somebody’s tibia bone?
—
James Parker, The Atlantic, 4 Nov. 2024
Solar cookers, which use the power of solar radiations to warm and cook food, have been also developed such as the ones from South African Solar bakers's ovens and dryiers.
—Daniela De Lorenzo, Forbes, 30 Oct. 2024
The scientists found that patients who had only radiation as treatment had credit scores 62 points lower than those who had only surgery.
—Don Rauf, EverydayHealth.com, 25 Oct. 2024
The glows also weren’t steadily emanating from isolated regions in the storms as anticipated but rather bubbled up in surges of radiation for hours across regions about 100 kilometers wide.
—Lee Billings, Scientific American, 21 Oct. 2024
See all Example Sentences for radiation 
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James Parker, The Atlantic, 4 Nov. 2024
Solar cookers, which use the power of solar radiations to warm and cook food, have been also developed such as the ones from South African Solar bakers's ovens and dryiers.
—Daniela De Lorenzo, Forbes, 30 Oct. 2024
The scientists found that patients who had only radiation as treatment had credit scores 62 points lower than those who had only surgery.
—Don Rauf, EverydayHealth.com, 25 Oct. 2024
The glows also weren’t steadily emanating from isolated regions in the storms as anticipated but rather bubbled up in surges of radiation for hours across regions about 100 kilometers wide.
—Lee Billings, Scientific American, 21 Oct. 2024
See all Example Sentences for radiation
Dictionary Entries Near radiation
Cite this Entry
“Radiation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiation. Accessed 23 Nov. 2024.
Copy CitationKids Definition
radiation
noun
ra·di·a·tion
ˌrād-ē-ˈā-shən
1
: the action or process of radiating
especially
: the process of giving off radiant energy in the form of waves or particles
2
: something that is radiated
especially
: energy radiated in the form of waves or particles
Medical Definition
radiation
noun
ra·di·a·tion
ˌrād-ē-ˈā-shən
1
: energy radiated in the form of waves or particles
2
3
: a tract of nerve fibers within the brain
especially
: one concerned with the distribution of impulses arising from sensory stimuli to the relevant coordinating centers and nuclei
the optic radiations
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