radiation Hear it!

radiation Definition

ra·dia·tion (rā′dē ā′s̸hən)

noun

  1. the act or process of radiating; specif., the process in which energy in the form of rays of light, heat, etc. is sent out through space from atoms and molecules as they undergo internal change
  2. the rays sent out; radiant energy
  3. radial arrangement of parts
  4. Biol. adaptive radiation
  5. Nuclear Physics energy emitted as electromagnetic waves, as gamma or X-rays, or as energetic nuclear particles, as neutrons, alpha and beta particles, etc.

Etymology: L radiatio

radiation Related Forms

ra′·dia′·tional adjective ra′·dia′·tive adjective

radiation Synonyms

radiation

n.

  1. Dissemination

    propagation, dissipation, divarication, polarization, scattering, spread, diffraction, transmission, broadcast, emission, ramification, diffusion, dispersion, circulation, divergence, dispersal; see also distribution 1.

  2. Fallout

    nuclear particles, radioactive particles, radioactivity, radiant energy; see fallout, pollution, X-rays.

radiation Telecom Definition

  1. The act or process of the spreading out of energy in rays.
  2. The emission, or outward flow, of energy in the form of electromagnetic waves, including radio waves and photons. See also electromagnetic, photon, and waveform.

radiation Usage Examples

Converse of object

  • ionize: Note, no sensing of UV or of ionizing radiation.
  • ionize: In addition, CT exposes you to more ionizing radiation than do regular X-rays.
  • emit: The radiation emitted from a cluster comes from a very small fraction of the mass present.
  • non-ionising: The primary health effect from high exposure levels of non-ionising radiation arises from heat generation in body tissue.
  • absorb: Various body tissues absorb the radiation at different rates, causing various shadows to appear on the plate.

Adjective modifier

  • electromagnetic: X-ray - pictures of the bones taken using electromagnetic radiation.
  • ultraviolet: Destruction of the ozone layer results in an increase in the amount of harmful ultraviolet radiation reaching the Earth's surface.
  • solar: Green house gases absorb energy from the diffused solar radiation, which cause them to warm up.
  • cosmic: Cosmic radiation also keeps us alive - thanks to all those photons which make it through from the sun.
  • infrared: More infrared radiation reaches the detector resulting in crisp infrared images.
  • infra-red: Be able to describe the use of infra-red radiation in night photography.

Modifies a noun

  • emises: To a handful of internationally branded had a far radiations emises par.
  • dose: A person can receive a greater radiation dose on a plane flight to Spain then from an x-ray of the wrist or shoulder.
  • therapy: AB - Most patients with plasma cell tumors receive radiation therapy at some time during the course of their disease.

Noun used with modifier

  • synchrotron: Much higher levels of direct investment by industry to synchrotron radiation sources are reported in the US.
  • ultraviolet: This chaotic motion may be caused by the powerful ultraviolet radiation from the luminous, massive stars.
  • gamma: The Ozone layer which protects us from harmful gamma radiation has recently disappeared over the tip of South Africa.
  • ultra-violet: Know that ultra-violet radiation is produced in fluorescent lights.
  • microwave: Trying to get info on health effects from microwave radiation.
  • longwave: Similarly, more longwave radiation is emitted to space in the tropics than at high latitudes.