- the process in which energy is emitted as particles or waves.
- the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and absorbed by another body.
- the energy transferred by these processes.
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Origin of radiation
OTHER WORDS FROM radiationra·di·a·tion·al, adjectivean·ti·ra·di·a·tion, adjectivein·ter·ra·di·a·tion, nounnon·ra·di·a·tion, noun
Words nearby radiation
Example sentences from the Web for radiation
They shoot bright spurts of radiation into space, said David Berghmans.
Deinococcus, which can be found high up in our atmosphere, is known for its unusual ability to resist genetic damage from high doses of ultraviolet radiation and its tendency to form relatively large colonies.Clumps of bacteria could spread life between planets|Paola Rosa-Aquino|August 27, 2020|Popular Science
DNA analysis suggested the radiation had fried their genetic material.If bacteria band together, they can survive for years in space|Jonathan Lambert|August 26, 2020|Science News
For decades, that meant sterilizing males by exposing them to radiation and then releasing them into the wild.Genetically modified mosquitoes have been OK’d for a first U.S. test flight|Susan Milius|August 22, 2020|Science News
We’re also bathed in locally-sourced, artisanal electromagnetic radiation.The Universe Has Made Almost All the Stars It Will Ever Make - Issue 89: The Dark Side|Caleb Scharf|August 19, 2020|Nautilus
He was very familiar with the reality of what could happen: Tokyo could be covered with a really high dosage of radiation.
Everything serene, snow piling on trees, over lawns, on houses, before we realize that all the snow is poisoned with radiation.
The 4M craft also includes a radiation dosimeter built by the Spanish company iC-Málaga.Luxembourg and China Team Up on Private Mission to the Moon|Matthew R. Francis|October 26, 2014|DAILY BEAST
She said that whenever she came into the room, she had felt the radiation of a vast and unseen force.
Those Chinese reports also talked about radiation deaths in Chicago.
Attention is here drawn once more to the antagonistic reactions of temperature and radiation effects of heat.Life Movements in Plants|Sir Jagadis Chunder Bose
There is also a significant amount of radiation characteristic of uranexite.Masters of Space|Edward Elmer Smith
Rip watched his dosimeter climb steadily as the radiation dosage mounted.Rip Foster in Ride the Gray Planet|Harold Leland Goodwin
Symptoms of radiation sickness may not be noticed for several days.In Time Of Emergency|Department of Defense
The worst wounded had less than half a face, and that discolored by purple blotches of radiation scar-tissue.Mr. President|Stephen Arr
British Dictionary definitions for radiation
- the emission or transfer of radiant energy as particles, electromagnetic waves, sound, etc
- the particles, etc, emitted, esp the particles and gamma rays emitted in nuclear decay
Derived forms of radiationradiational, adjective
Medical definitions for radiation
Scientific definitions for radiation
- Streams of photons, electrons, small nuclei, or other particles. Radiation is given off by a wide variety of processes, such as thermal activity, nuclear reactions (as in fission), and by radioactive decay.
- The emission or movement of such particles through space or a medium, such as air. See Notes at conduction electromagnetic radiation.