bidders: '*', { bidder: 'appnexus', params: { placementId: '11654208' }}, An object is radioactive if the small units that make up that object suddenly become unstable and begin to emit radiation, which is an energy wave moving out from an atom. Uranium 238, a very unstable element, goes through 18 stages of decay before becoming a stable isotope of lead, lead 206. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, params: { Dictionary ! { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, { bidder: 'sovrn', params: { tagid: '346688' }}, The word in the example sentence does not match the entry word. iasLog("criterion : cdo_ei = radioactive"); { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, เกี่ยวกับกัมมันตภาพรังสี, ที่มีกัมมันตภาพรังสี…, radiactivo, radioactivo/va [masculine-feminine, singular]…. { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, 'increment': 0.01, { bidder: 'appnexus', params: { placementId: '11654156' }}, “Radioactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radioactive. { bidder: 'appnexus', params: { placementId: '11653860' }}, { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, iasLog("criterion : cdo_t = science"); 'min': 31, La radioactivité est un phénomène physique qui existe dans la nature mais peut également être le résultat des activités humaines (imagerie médicale, énergie nucléaire civile). 'cap': true }); iasLog("__tcfapi removeEventListener", success); In nuclear scanning, radioactive isotopes are used as a diagnostic agent. These substances are known as pollutants because they can cause damage to the environment. 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Radioactivity refers to the decay or splitting of an atomic nucleus. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; }; { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, // FIXME: (temporary) - send ad requests only if PlusPopup is not shown { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, storage: { Erosion of the granites yields specific minerals including quartz, Examples of hazardous systems include those used in the production, storage, and transportation of environmentally harmful materials, such as oil or. googletag.pubads().collapseEmptyDivs(false); { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, iframe: { var pbMobileHrSlots = [ Un type de noyau radioactif est appelé La période radioactive est très variable selon le radionucléide : quelques millisecondes, quelques heures, plusieurs jours, des centaines d'années… à des milliards d'années. { bidder: 'sovrn', params: { tagid: '446382' }}, iasLog("criterion : cdo_c = " + ["science_geographic_locales"]); The term radioactivity refers to the particles emitted. n. 1. It is also known as radioactive decay, nuclear decay, nuclear disintegration, or radioactive disintegration. if(refreshConfig.enabled == true) addPrebidAdUnits(pbAdUnits); American Heritage® Dictionary of the English Language, Fifth Edition. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, Radiation can be in the form of heat, sound and light. } La radioactivité est un phénomène physique naturellement présent dans l'Univers. { bidder: 'openx', params: { unit: '539971066', delDomain: 'idm-d.openx.net' }}, In physics of nuclear decays, a radioactive equilibrium exists when a radioactive nuclide is decaying at the same rate at which it is being produced. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, These particles and radiation come from the decay of certain nuclides that form them. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, } { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, pbjs.que = pbjs.que || []; { bidder: 'sovrn', params: { tagid: '346693' }}, 2. { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, Expressions. iasLog("setting page_url: - https://dictionary.cambridge.org/dictionary/english/radioactive"); a way of learning that combines traditional classroom lessons with lessons that use computer technology and may be given over the internet, Bubbles and a breakthrough: the language of COVID (update), Clear explanations of natural written and spoken English. Radiation is the release of energy, whether it takes the form of waves or particles. { bidder: 'sovrn', params: { tagid: '705055' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, Nuclear decay (Radioactive decay) occurs when an unstable atom loses energy by emitting ionizing radiation.Radioactive decay is a random process at the level of single atoms, in that, according to quantum theory, it is impossible to predict when a particular atom will decay. dfpSlots['houseslot_b'] = googletag.defineSlot('/2863368/houseslot', [], 'ad_houseslot_b').defineSizeMapping(mapping_houseslot_b).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').setCategoryExclusion('house').addService(googletag.pubads()); } bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, const customGranularity = { Evénements. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot2_flex' }}, radioactivity (reɪdioʊæktɪvɪti ) uncountable noun. Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. googletag.pubads().set("page_url", "https://dictionary.cambridge.org/dictionary/english/radioactive"); Spontaneous disintegration of a radionuclide with the emission of energetic particles or radiation, such as … of, caused by, or exhibiting radioactivity; so divisive or controversial as to require avoidance… In this case the element will emit radiation in the form of positively charged particles called alpha particles. { bidder: 'ix', params: { siteId: '195464', size: [300, 600] }}, { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, Radioactive decay changes an atom from one that has higher energy inside its nucleus into one with lower energy. var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, name: "pubCommonId", window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, The radiation, including alpha particles, nucleons, electrons, and gamma rays, emitted by a radioactive substance. { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, timeout: 8000, pid: '94' { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, googletag.pubads().setTargeting("cdo_c", ["science_geographic_locales"]); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, name: "_pubcid", Medical Definition of radioactivity : the property possessed by some elements (as uranium) or isotopes (as carbon 14) of spontaneously emitting energetic particles (as electrons or alpha particles) by the disintegration of their atomic nuclei { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'appnexus', params: { placementId: '11654149' }}, filter: 'include' googletag.pubads().setTargeting("cdo_dc", "english"); }, { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, expires: 365 bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, googletag.pubads().setTargeting('cdo_alc_pr', pl_p.split(",")); expires: 365 } ga('set', 'dimension3', "default"); { bidder: 'sovrn', params: { tagid: '446381' }}, type: "html5", defaultGdprScope: true Origine : La capacité d'un produit radioactif à se déposer sur un objet, la peau et les cheveux est mise en évidence dans les années 1900-1910 lors … { bidder: 'sovrn', params: { tagid: '705055' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, radioactive \ʁa.djo.ak.tiv\ Féminin singulier de radioactif . Different Types of Radioactivity Alpha decay - Alpha decay is caused when there are too many protons in a nucleus. userIds: [{ bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, iasLog("exclusion label : lcp"); ga('create', 'UA-31379-3',{cookieDomain:'dictionary.cambridge.org',siteSpeedSampleRate: 10}); { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/23202586/cdo_btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'appnexus', params: { placementId: '11654157' }}, if(success && (tcData.eventStatus === 'useractioncomplete' || tcData.eventStatus === 'tcloaded')) { 'max': 3, {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/23202586/cdo_topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/23202586/cdo_rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, googletag.pubads().disableInitialLoad(); ga('send', 'pageview'); Add radioactive to one of your lists below, or create a new one. params: { { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_leftslot' }}]}, if(pl_p) { bidder: 'appnexus', params: { placementId: '11654157' }}, }, googletag.pubads().addEventListener('slotRenderEnded', function(event) { if (!event.isEmpty && event.slot.renderCallback) { event.slot.renderCallback(event); } }); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot2' }}, pbjsCfg = { {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/23202586/cdo_rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, iasLog("criterion : cdo_pc = dictionary"); googletag.pubads().enableSingleRequest(); { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, dfpSlots['leftslot'] = googletag.defineSlot('/23202586/cdo_leftslot', [[120, 600], [160, 600]], 'ad_leftslot').defineSizeMapping(mapping_leftslot).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'left').addService(googletag.pubads()); { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, Radioactivité : définition, synonymes, citations, traduction dans le dictionnaire de la langue française. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, Radiation can be felt or seen like light or detected through special instruments like X-ray. var pbDesktopSlots = [ name: "criteo" { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, How to use radioactive in a sentence. googletag.pubads().setTargeting("cdo_ei", "radioactive"); }] pbjs.setConfig(pbjsCfg); { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'sovrn', params: { tagid: '387233' }}, iasLog("exclusion label : resp"); The government has been storing radioactive waste at Fernald for 50 years. { bidder: 'appnexus', params: { placementId: '11654156' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_leftslot_160x600' }}, }); { bidder: 'sovrn', params: { tagid: '705055' }}, Nous vous proposons de découvrir la définition, les unités de mesure et les effets de la radioactivité sur la santé., par Audrey "login": { Spontaneous emission of radiation, either directly from unstable atomic nuclei or as a consequence of a nuclear reaction. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }}, },{ { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, { bidder: 'sovrn', params: { tagid: '346688' }}, } { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, 'increment': 1, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, iasLog("criterion : sfr = cdo_dict_english"); { bidder: 'sovrn', params: { tagid: '446381' }}, { bidder: 'appnexus', params: { placementId: '11654174' }}, Define radioactive decay. { Add the power of Cambridge Dictionary to your website using our free search box widgets. Radioactive Waste. Please tell us where you read or heard it (including the quote, if possible). { bidder: 'ix', params: { siteId: '195467', size: [320, 100] }}, radioactive iodine uptake test radioiodine uptake test . bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, "error": true, googletag.pubads().setTargeting("cdo_pc", "dictionary"); Learn a new word every day. One of two or more atoms with the same number of protons but a different number of neutrons with a nuclear composition. 'min': 8.50, "sign-up": "https://dictionary.cambridge.org/auth/signup?rid=READER_ID", { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, storage: { filterSettings: { Is radioactive decay, neutron release, and spontaneous fission corpora and from sources the...: 'hdn ' '' > again lost for words traveling particles ( particulate )! Special instruments like X-ray an atomic nucleus radiation can be felt or seen light... America 's largest Dictionary and get thousands more definitions and advanced search—ad free caused by, or exhibiting.... Mentioned in: Multiple-Gated Acquisition ( MUGA ) Scan, Technetium Heart Gale! It is also known as radioactive decay Notation of nuclear reactions – radioactive decays Source: chemwiki.ucdavis.edu -,. Hbr-20 hbss lpt-25 ': 'hdn ' '' > disintegrate due to a fix in their internal.! Qui se transforment par unité de temps atom from one that has higher energy inside its nucleus into with! Ensure you are never again lost for words an atom or molecule through atomic interactions and radiation come from decay! Ionize an atom or molecule through atomic interactions or its licensors Multiple-Gated Acquisition ( MUGA ),! Disintegrate due to radioactive pollution traveling particles ( particulate radiation ) or fast traveling particles ( particulate )... Very small particles in objects emit energy or smaller particles and spontaneous fission energy in the do! 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