Definitions for radiation
ˌreɪ diˈeɪ ʃənra·di·a·tion

Princeton's WordNetRate this definition:4.7 / 6 votes

1. radiationnoun

   energy that is radiated or transmitted in the form of rays or waves or particles

2. radiationnoun

   the act of spreading outward from a central source

3. radiation sickness, radiation syndrome, radiationnoun

   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"

4. radiation, radioactivitynoun

   the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

5. radiationnoun

   the spread of a group of organisms into new habitats

6. radiationnoun

   a radial arrangement of nerve fibers connecting different parts of the brain

7. radiotherapy, radiation therapy, radiation, actinotherapy, irradiationnoun

   (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

WiktionaryRate this definition:0.0 / 0 votes

1. radiationnoun

   The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.

2. radiationnoun

   The process of radiating waves or particles.

3. radiationnoun

   The transfer of energy via radiation (as opposed to convection or conduction)

4. radiationnoun

   Radioactive energy

5. Etymology: From radiatio.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. Radiationnoun

   Etymology: radiatio, Lat. radiation, Fr.

   1. Beamy lustre; emission of rays.

   We have perspective houses, where we make demonstrations of all lights and radiations, and of all colours. Francis Bacon.

   Should I say I liv’d darker than were true,
   Your radiation can all clouds subdue,
   But one; ’tis best light to contemplate you. John Donne.

   2. Emission from a center every way.

   Sound paralleleth in many things with the light, and radiation of things visible. Francis Bacon, Natural History.

Webster DictionaryRate this definition:2.0 / 1 vote

1. Radiationnoun

   the act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness

2. Radiationnoun

   the shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat

3. Etymology: [L. radiatio: cf. F. radiation.]

WikidataRate this definition:3.5 / 2 votes

1. Radiation

   In physics, radiation is a process in which energetic particles or energetic waves travel through a vacuum, or through matter-containing media that are not required for their propagation. Waves of a mass filled medium itself, such as water waves or sound waves, are usually not considered to be forms of "radiation" in this sense. Radiation can be classified as either ionizing or non-ionizing according to whether it ionizes or does not ionize ordinary chemical matter. The word radiation is often colloquially used in reference to ionizing radiation, but the term radiation may correctly also refer to non-ionizing radiation as well. The particles or waves radiate from a source. This aspect leads to a system of measurements and physical units that are applicable to all types of radiation. Because radiation expands as it passes through space, and as its energy is conserved, the power of all types of radiation follows an inverse-square law in relation to the distance from its source. Both ionizing and non-ionizing radiation can be harmful to organisms and can result in changes to the natural environment. In general, however, ionizing radiation is far more harmful to living organisms per unit of energy deposited than non-ionizing radiation, since the ions that are produced, even at low radiation powers, have the potential to cause DNA damage. By contrast, most non-ionizing radiation is harmful to organisms only in proportion to the thermal energy deposited, and is conventionally considered harmless at low powers that do not produce a significant temperature rise. Ultraviolet radiation in some aspects occupies a middle ground, as it has some features of both ionizing and non-ionizing radiation. Although nearly all of the ultraviolet spectrum that penetrates the Earth's atmosphere is non-ionizing, this radiation does far more damage to many molecules in biological systems than can be accounted for by heating effects. These properties derive from ultraviolet's power to alter chemical bonds, even without having quite enough energy to ionize atoms.

U.S. National Library of MedicineRate this definition:5.0 / 1 vote

1. Radiation

   Emission or propagation of electromagnetic energy (waves/rays), or the waves/rays themselves; a stream of electromagnetic particles (electrons, neutrons, protons, alpha particles) or a mixture of these. The most common source is the sun.

The Standard Electrical DictionaryRate this definition:0.0 / 0 votes

1. Radiation

   The traveling or motion of ether waves through space. [Transcriber's note: The modern term corresponding to this definition is photons. The modern concept of radiation also includes particles-- neutrons, protons, alpha (helium) and beta (electrons) rays and other exotic items.]

Editors ContributionRate this definition:0.0 / 0 votes

1. Radiationadjective

   Radiation means emitting of heat energy through electromagnetic waves.

   The sun emits radiation.

   
   

   Submitted by chandusreddy007 on January 31, 2022  

Matched Categories

1. • Emission
   • Energy
   • Medicine
   • Natural Process
   • Neural Structure
   • Spread
   • Syndrome
   • Therapy

British National Corpus

1. Nouns Frequency

   Rank popularity for the word 'radiation' in Nouns Frequency: #2018

Anagrams for radiation »

1. antiradio

How to pronounce radiation?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say radiation in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of radiation in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of radiation in Pythagorean Numerology is: 1

Examples of radiation in a Sentence

1. Robert Califf:

   And think about it, if we had a nuclear attack against us, we wouldn't want the FDA saying' we want five years of follow up on a potential treatment for radiation.'.

2. Madelaine Atteberry:

   When the dinosaurs went extinct, access to different foods and environments enabled mammals to flourish and diversify rapidly in their tooth anatomy and evolve larger body size, they clearly took advantage of this opportunity, as we can see from the radiation of new mammal species that took place in a relatively short amount of time following the mass extinction.

3. Naren Ramakrishna:

   We believe that even really low doses of radiation can result in impairment in hippocampus function long term, the dose that would’ve been delivered using X-rays would have been more than 10 times greater.

4. Naamit Kurshan Gerber:

   So we’ve had evidence before this paper that in women over 70, adding radiation lowers the risk of local recurrence, but it doesn’t change survival. And this study is really adding to the weight of that evidence, but it’s also, of course, lowering the age from 70 to 65, the role of radiation in these women is really reducing this risk of local recurrence, which it does, but there’s really no effect on overall survival.

5. Steven Keating:

   The patient has the least access to the data, but has to make the most medical decisions. It was my decision to do surgery or radiation or chemo, what type of chemo, it’s all in the patient’s hands. Usually they just follow what the doctor says, but they don’t have that same access to the data that the doctors do, patients don’t have access to their data legally, they only have access to their designated record, and if it’s not included in there they don’t see it.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=radiation
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Radiation
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=radiation
4. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/radiation
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=radiation
6. ^ The Standard Electrical Dictionary
   https://www.gutenberg.org/cache/epub/26535/pg26535-images.html#:~:text=radiation