Definition of Radiation

Babylon English
radiation
n. energy radiated in the form of waves or particles; process of emitting energy in electromagnetic waves or moving particles; act of emitting, act of beaming or glowing

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Radiation definition was found in categories: Language, Idioms & Slang(5)  Medicine(5)  Science & Technology(15)  Society & Culture(3)  Religion & Spirituality(1)  Entertainment & Music(2)  Social Science(1)  Encyclopedia(1)  

Radiation Definition from Language, Idioms & Slang Dictionaries & Glossaries

Webster's Revised Unabridged Dictionary (1913)
Radiation
(n.)
The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.
  
(n.)
The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.
  

WordNet 2.0
radiation

Noun
1. energy that is radiated or transmitted in the form of rays or waves or particles
(hypernym) energy
(hyponym) ionizing radiation
(derivation) radiate
2. the act of spreading outward from a central source
(hypernym) emission, emanation
(hyponym) bombardment
(derivation) radiate, ray
3. syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
(synonym) radiation sickness, radiation syndrome
(hypernym) syndrome
4. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
(synonym) radioactivity
(hypernym) emission
(hyponym) corpuscular radiation, particulate radiation
5. the spread of a group of organisms into new habitats
(hypernym) natural process, natural action, action, activity
(hyponym) adaptive radiation
(derivation) diversify, radiate
6. a radial arrangement of nerve fibers connecting different parts of the brain
(hypernym) neural structure
(derivation) radiate, ray
7. (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
(synonym) radiotherapy, radiation therapy, actinotherapy, irradiation
(hypernym) therapy
(hyponym) phototherapy
(classification) medicine, medical specialty

hEnglish - advanced version
radiation

radiation
\ra`di*a"tion\ (-ā"shŭn), n. [l. radiatio: cf. f. radiation.]
1. the act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.
2. the shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.
radiation
n
1. the physical phenomenon of radiating energy in the form of waves or particles
2. the act of radiating
3. the spread of a group of organisms into new habitats


  similar words(14) 




 ionizing radiation 
 radio radiation 
 visible radiation 
 radiation syndrome 
 ultraviolet radiation 
 infrared radiation 
 radiation pattern 
 radiation field 
 radiation diagram 
 radiation pressure 
 x-radiation 
 radiation pyrometer 
 radiation sickness 
 radiation therapy 

Concise English-Irish Dictionary v. 1.1
radiation
radaíocht

JM Welsh <=> English Dictionary
Arluched
Arluched = n. radiation

Cadwraidd
Cadwraidd = n. radiation of sinews

Corysgwr
Corysgwr = n. a radiation

Ffawdd
Ffawdd = n. radiation, splendour

Fflau
Fflau = n. a spread out, radiation

Ffload
Ffload = n. a darting, radiation

Peleidriant
Peleidriant = n. a radiation

Pleiniad
Pleiniad = n. a radiation

Rhaiad
Rhaiad = n. radiation

Ysterlewyn
Ysterlewyn = n. radiation


Radiation Definition from Medicine Dictionaries & Glossaries

NCI Dictionary of Cancer Terms
radiation
[ray-dee-AY-shun]
Energy released in the form of particles or electromagnetic waves. Common sources of radiation include radon gas, cosmic rays from outer space, and medical x-rays.

radiation therapy
[ray-dee-AY-shun THER-ah-pee]
The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy, implant radiation, or brachytherapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that circulates throughout the body. Also called radiotherapy.

Dictionary of Medicine (Shahram)
Radiation
The word radiation is derived from the Latin word radius meaning a spoke in a wheel. The same Latin word radius was given by the Romans to the smaller of the two bones in the forearm since it was thought to look like a spoke in a wheel.

Aids Glossary
radiation
electromagnetic rays, including X-rays and ultraviolet light.

CDC Radiological Terms
Radiation
 energy moving in the form of particles or waves. Familiar radiations are heat, light, radio waves, and microwaves. Ionizing radiation is a very high-energy form of electromagnetic radiation.
  

The TCRC Glossary for Testicular Cancer and Other Related Conditons
Radiation therapy
Treatment with high-energy radiation from X-rays or other sources of radiation. Also known as XRT.


Radiation Definition from Science & Technology Dictionaries & Glossaries

NRC Nuclear Energy Glossary
Radiation (ionizing radiation)
Alpha particles, beta particles, gamma rays, x-rays, neutrons, high-speed electrons, high-speed protons, and other particles capable of producing ions. Radiation, as used in 10 CFR Part 20, does not include non-ionizing radiation, such as radio- or microwaves, or visible, infrared, or ultraviolet light (see also 10 CFR 20.1003).

Radiation, nuclear
Particles (alpha, beta, neutrons) or photons (gamma) emitted from the nucleus of unstable radioactive atoms as a result of radioactive decay.

EIA Energy Glossary
Radiation
The transfer of heat through matter or space by means of electromagnetic waves.

WEATHER&METEOROLOGY
Radiation
The transferring of energy through electromagnetic waves.

Energy Glossary
RADIATION
The flow of energy across open space via electromagnetic waves such as light. Passage of heat from one object to another without warming the air space in between.

Dictionary of Automotive Terms
Radiation
The transfer of heat from one object to another when the hotter object sends out invisible rays or waves that upon striking the colder object, cause it to vibrate and thus heat.

Telecommunication Standard Terms
radiation
1. In communication, the emission of energy in the form of electromagnetic waves. (188 ) 2. The outward flow of energy from any source in the form of radio waves. [NTIA] [RR]

Astronomy and Physics Terms by ExploreSpace.com
Radiation
Energy radiated in the form of waves or particles; photons.

Technical English by wpv
RADIATION
Transfer of heat by electromagnetic waves.

Physical Geography Terms and Meanings
Radiation
The emission and propagation of energy in the form of electromagnetic waves.

Electronics Terminology
Radiation
The combined process of emission, transmission, and absorption of thermal energy between bodies separated by an empty space.

General Chemistry Glossary
radioactivity (radiation; radioactive)
Spontaneous emission of particles or high-energy electromagnetic radiation from the nuclei of unstable atoms. "Radiation" refers to the emissions, and "radioactive source" refers to the source of the radiation.

Web Dictionary of Cybernetics and Systems
Radiation
The dissipation of energy from a source into its surroundings by the emission of waves or particles. (Krippendorff)

RF Electronics
Radiation
In wireless, the conversion of the conducted RF signal in the transmitter to radio waves that can be propagated over distance.

NCRS Construction Glossary
RADIATION
Any heated surface loses heat to cooler surrounding space or surfaces through radiation. The earth receives its heat from the sun by radiation. The heat rays are turned into heat as they strike an object which will absorb some or all of the heat transmitted.

Rubber Glossary
Radiation
An emission, of varying content, from a disturbed atom undergoing internal change. There are two broad classifications: (A) Corpuscular, comprising streams of particles, either neutral or charged, e.g. protons, neutrons, electrons; and (B) Electromagnetic, comprising wave-like emissions as gamma, ultraviolet, etc.


Radiation Definition from Society & Culture Dictionaries & Glossaries

EPA Glossary of Climate Change Terms
Radiation
Energy emitted in the form of electromagnetic waves. Radiation has differing characteristics depending upon the wavelength. Because the radiation from the Sun is relatively energetic, it has a short wavelength (ultra-violet, visible, and near infrared) while energy radiated from the Earth's surface and the atmosphere has a longer wavelength (e.g., infrared radiation) because the Earth is cooler than the Sun. See ultraviolet radiationinfrared radiationsolar radiationlongwave radiationterrestrial radiation.

EPA Terms of Environment
Radiation
Transmission of energy though space or any medium. Also known as radiant energy.

Environmental Engineering (English ver.)
Radiation
Transmission of energy though space or any medium. Also known as radiant energy.


Radiation Definition from Religion & Spirituality Dictionaries & Glossaries

Rakefet
Radiation
Radiation Generally, the emission of life energies, or various kinds of energic outflowings or productions radially outward from a center. Thus it is a name for the entire cosmic process of formation of worlds; the production of many out of one, the passing from unity to measureless diversity and multiplicity. The radiations of the ten or twelve solar logoi from the heart of the solar chain, streaming through and permeating the entire extent of the sun's kingdom and becoming focalized in the different planetary bodies, illustrate the modus of the general principle of radiation.
According to theosophic teachings physical matter is a condensation of light, as is being experimentally verified. It is evident that the subject of the emanation of innumerable forms of life energy on all the planes of the cosmos is a very wide one, and the words fohat, light, life, electricity, etc., are used in this connection. These radiations may be classified on a septenary, denary, or duodenary system, as when we speak of the seven, ten, or twelve rays of the solar logos. See also RAY


Radiation Definition from Entertainment & Music Dictionaries & Glossaries

English to Federation-Standard Golic Vulcan
Radiation
saya

English - Klingon
radiation
n. woj


Radiation Definition from Social Science Dictionaries & Glossaries

Phobia
Radiophobia
Fear of radiation, x-rays


Radiation Definition from Encyclopedia Dictionaries & Glossaries

Wikipedia English - The Free Encyclopedia
Radiation
Radiation as used in physics, is energy in the form of waves or moving subatomic particles. Radiation can be classified as ionizing or non-ionizing radiation, depending on its effect on atomic matter. The most common use of the word "radiation" refers to ionizing radiation. Ionizing radiation has enough energy to ionize atoms or molecules while non-ionizing radiation does not. Radioactive material is a physical material that emits ionizing radiation.

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