- 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.
Origin of radiation
Related Words for radiationemission, radioactivity, diffusion, circulation, transmission, divergence, broadcast, dispersion, propagation, spread, ramification, dispersal, dissipation, distribution, scattering, divarication, polarization, diffraction
Examples from the Web for radiation
Contemporary Examples of radiation
He was very familiar with the reality of what could happen: Tokyo could be covered with a really high dosage of radiation.Takashi Murakami’s Art From Disaster
November 28, 2014
Everything serene, snow piling on trees, over lawns, on houses, before we realize that all the snow is poisoned with radiation.The Internet Embedded in Your Head
November 21, 2014
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
She said that whenever she came into the room, she had felt the radiation of a vast and unseen force.Those Kansas City Blues: A Family History
October 24, 2014
Those Chinese reports also talked about radiation deaths in Chicago.Putin Threatens Nuclear War Over Ukraine
Gordon G. Chang
August 31, 2014
Historical Examples of radiation
Perhaps the tape was fuzzy or it may have been fogged in transit by radiation.Mezzerow Loves Company
Floyd L. Wallace
"Here's the source of radiation, sir," a searchman reported.
There is also a significant amount of radiation characteristic of uranexite.
The radiation of a star is different for different wave-lengths (λ).
The apparent attributes of the stars are studied by the aid of their 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
mid-15c., "act or process of radiating," from Middle French radiation and directly from Latin radiationem (nominative radiatio) "a shining, radiation," noun of action from past participle stem of radiare "to beam, shine, gleam; make beaming," from radius "beam of light; spoke of a wheel" (see radius). Meaning "rays or beams emitted" is from 1560s. Meaning "divergence from a center" is 1650s.
- 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.