{ bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, var pbHdSlots = [ name: "criteo" { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '1666926', position: 'btf' }}, Radioactive definition is - of, caused by, or exhibiting radioactivity. { bidder: 'sovrn', params: { tagid: '346688' }}, What is Radioactive Decay Notation of nuclear reactions – radioactive decays Source: chemwiki.ucdavis.edu. { bidder: 'sovrn', params: { tagid: '705055' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, Radioactivity is simply when very small particles in objects emit energy or smaller particles. Uranium 238, a very unstable element, goes through 18 stages of decay before becoming a stable isotope of lead, lead 206. }] Its meaning has broadened but not decayed. enableSendAllBids: false { bidder: 'appnexus', params: { placementId: '11654157' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, }, tcData.listenerId); radioactive decay synonyms, radioactive decay pronunciation, radioactive decay translation, English dictionary definition of radioactive decay. Radiation : Definition. Click on the arrows to change the translation direction. { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, Radioactivity is the spontaneous emission of radiation in the form of particles or high energy photons resulting from a nuclear reaction. { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, Mentioned in: Multiple-Gated Acquisition (MUGA) Scan, Technetium Heart Scan Gale Encyclopedia of Medicine. Slippery Words Quiz—Changing with the Times. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, googletag.pubads().setTargeting("cdo_l", "en"); A radioactive material releases radiation when it decays. googletag.pubads().collapseEmptyDivs(false); Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! iframe: { googletag.pubads().setTargeting("cdo_ei", "radioactive"); googletag.pubads().setTargeting("cdo_ptl", "entry-lcp"); "login": { radioactivity (reɪdioʊæktɪvɪti ) uncountable noun. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radioactive.' var mapping_leftslot = googletag.sizeMapping().addSize([1063, 0], [[120, 600], [160, 600], [300, 600]]).addSize([963, 0], [[120, 600], [160, 600]]).addSize([0, 0], []).build(); Nous vous proposons de découvrir la définition, les unités de mesure et les effets de la radioactivité sur la santé., par Audrey { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, radioactive iodine uptake test radioiodine uptake test . { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, "authorizationTimeout": 10000 }, The change of energy of the nucleus is given to the particles that are created. Delivered to your inbox! } It is, in essence, an attribute of individual atomic nuclei. var pbTabletSlots = [ }, },{ const customGranularity = { { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, name: "unifiedId", { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, { bidder: 'sovrn', params: { tagid: '705055' }}, { bidder: 'ix', params: { siteId: '195467', size: [320, 100] }}, Add the power of Cambridge Dictionary to your website using our free search box widgets. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}]; }; radioactive \ʁa.djo.ak.tiv\ Féminin singulier de radioactif . googletag.pubads().addEventListener('slotRenderEnded', function(event) { if (!event.isEmpty && event.slot.renderCallback) { event.slot.renderCallback(event); } }); name: "pubCommonId", { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, dfpSlots['rightslot'] = googletag.defineSlot('/23202586/cdo_rightslot', [[300, 250]], 'ad_rightslot').defineSizeMapping(mapping_rightslot).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').addService(googletag.pubads()); }, { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, 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. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, {code: 'ad_topslot_a', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/23202586/cdo_topslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, var dfpSlots = {}; googletag.pubads().setTargeting('cdo_alc_pr', pl_p.split(",")); }, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, { bidder: 'sovrn', params: { tagid: '346688' }}, dfpSlots['rightslot2'] = googletag.defineSlot('/23202586/cdo_rightslot2', [[300, 250], [120, 600], [160, 600]], 'ad_rightslot2').defineSizeMapping(mapping_rightslot2).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').addService(googletag.pubads()); Learn a new word every day. { bidder: 'ix', params: { siteId: '195464', size: [160, 600] }}, iasLog("criterion : cdo_l = en"); pbjs.setConfig(pbjsCfg); params: { }; Usage explanations of natural written and spoken English, 0 && stateHdr.searchDesk ? { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_leftslot' }}, 'increment': 0.01, The rate of decay of radioactive substances such as carbon 14 … expires: 365 ga('create', 'UA-31379-3',{cookieDomain:'dictionary.cambridge.org',siteSpeedSampleRate: 10}); 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 … {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/23202586/cdo_topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, Something that is radioactive contains a substance that produces energy in the form of powerful and harmful rays . { bidder: 'ix', params: { siteId: '195451', size: [300, 50] }}, 'buckets': [{ googletag.pubads().setTargeting("cdo_dc", "english"); Radioactive decay occurs in unstable atomic nuclei. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, Animals, plants and humans can all fall ill due to radioactive pollution. } Test your vocabulary with our 10-question quiz! pbjsCfg.consentManagement = { The government has been storing radioactive waste at Fernald for 50 years. { syncDelay: 3000 Beta decay - Beta decay is caused when there are too many neutrons in a nucleus. var mapping_topslot_a = googletag.sizeMapping().addSize([746, 0], []).addSize([0, 550], [[300, 250]]).addSize([0, 0], [[300, 50], [320, 50], [320, 100]]).build(); { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, Radioactive Waste. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, Radiation is the release of energy, whether it takes the form of waves or particles. "sign-out": "https://dictionary.cambridge.org/auth/signout?rid=READER_ID" iasLog("criterion : cdo_t = science"); }, 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: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, 'cap': true {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/23202586/cdo_rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, See the full definition for radioactive in the English Language Learners Dictionary, Nglish: Translation of radioactive for Spanish Speakers, Britannica English: Translation of radioactive for Arabic Speakers. Radioactive pollution is the presence of radioactive substances in the environment. Expressions. { bidder: 'sovrn', params: { tagid: '705055' }}, googletag.pubads().setTargeting("cdo_t", "science"); var pbjs = pbjs || {}; “Radioactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radioactive. Radon is an odorless, colorless gas that arises naturally from the ground because of the decay of, Almost all women—and therefore men—use a form of birth control at some point in their lives, yet contraception is so politically and legally, Subsequent polling data show that the quota issue is perhaps the most powerful one in our politics… A House Democratic aide says, "The quota issue is, Plutonium is the only one of these transuranic elements that can exist a fair amount of time before, The rocky planets in our solar system -- Earth, Venus, Mercury and Mars -- contain elements that create heat through, Neutrinos had captured physicists’ imaginations since 1930, when Wolfgang Pauli predicted their existence out of desperation to account for a discrepancy in the process of, Up until recently, the only way to test for Alzheimer's was to do a spinal tap or use an expensive brain scan that required injecting a, In the 1950s, many of these movies used alien invasions or, Blazes at such sites could release toxins ranging from acid mine drainage to, Two elements remain, cesium and strontium, that are dangerously, Post the Definition of radioactive to Facebook, Share the Definition of radioactive on Twitter, The Difference Between 'Hoard' and 'Horde'. 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. pbjsCfg = { "error": true, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, googletag.pubads().set("page_url", "https://dictionary.cambridge.org/dictionary/english/radioactive"); "authorizationFallbackResponse": { googletag.pubads().enableSingleRequest(); googletag.cmd = googletag.cmd || []; timeout: 8000, var mapping_rightslot = googletag.sizeMapping().addSize([746, 0], [[300, 250]]).addSize([0, 0], []).build(); { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, { bidder: 'sovrn', params: { tagid: '446382' }}, What made you want to look up radioactive? },{ { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); name: "pbjs-unifiedid", { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, iasLog("criterion : cdo_pc = dictionary"); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, 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. { bidder: 'appnexus', params: { placementId: '11654149' }}, { bidder: 'ix', params: { siteId: '195464', size: [300, 600] }}, { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/23202586/cdo_btmslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 50], [300, 50]] } }, var mapping_houseslot_a = googletag.sizeMapping().addSize([963, 0], [300, 250]).addSize([0, 0], []).build(); { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, iasLog("criterion : cdo_c = " + ["science_geographic_locales"]); 'min': 0, The disintegrating nucleus is usually referred to as the parent nucleus and the nucleus remaining after the event as the daughter nucleus.The daughter nucleus can either be stable or radioactive. radioactive: 1 adj exhibiting or caused by radioactivity “ radioactive isotope” “ radioactive decay” “ radioactive fallout” Synonyms: hot having or dealing with dangerously high levels of radioactivity Antonyms: nonradioactive not radioactive { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, { bidder: 'appnexus', params: { placementId: '11654157' }}, { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, type: "html5", 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. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, storage: { if(!isPlusPopupShown()) Radioactivité : définition, synonymes, citations, traduction dans le dictionnaire de la langue française. radioactive definition: 1. having or producing the energy that comes from the breaking up of atoms: 2. having or producing…. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}]; 'cap': true Define radioactive decay. Radioactive waste is defined as any material that is either radioactive or contaminated by radioactivity and for which no further use is foreseen, and it encompasses a wide range of radioactive isotopes in a variety of physical and chemical forms (aqueous waste, liquid organic waste, solid waste, wet solid waste, biological and medical waste, etc. } { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, iasLog("__tcfapi removeEventListener", success); { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_leftslot' }}]}, In this case the element will emit radiation in the form of positively charged particles called alpha particles. partner: "uarus31" 'min': 8.50, { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/23202586/cdo_rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, An aliquot was removed to determine the uptake of the, This was used as the starting material for the selective, The amplified products are visualized on sequencing polyacrylamide gels using, Mutagenicity tests on bacterial cultures using exceptionally, Such preparations are metabolically active as shown by then* ability to metabolize, In recent years, regulatory problems associated with the use of, It is expected that the latter can regulate the crossfield plasma particle transport in tokamak discharges which are contaminated by, This is the core of a new technology developed to treat buried low-level. 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Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The term radioactivity refers to the particles emitted. Contamination radioactive Sens : Contamination d'un corps ou d'un objet par un élément radioactif. n. 1. var pbAdUnits = getPrebidSlots(curResolution); dfpSlots['topslot_b'] = googletag.defineSlot('/23202586/cdo_topslot', [[728, 90]], 'ad_topslot_b').defineSizeMapping(mapping_topslot_b).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); dfpSlots['topslot_a'] = googletag.defineSlot('/23202586/cdo_topslot', [], 'ad_topslot_a').defineSizeMapping(mapping_topslot_a).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. name: "_pubcid", Learn more. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, var mapping_houseslot_b = googletag.sizeMapping().addSize([963, 0], []).addSize([0, 0], [300, 250]).build(); iasLog("criterion : cdo_ei = radioactive"); name: "idl_env", { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, Spontaneous emission of radiation, either directly from unstable atomic nuclei or as a consequence of a nuclear reaction. American Heritage® Dictionary of the English Language, Fifth Edition. Ces appareils permettent aussi le fonctionnement panoramique: la source radioactive est déplacée plus ou moins dans un tube de guidage, et peut gammagraphier des soudures circulaires dans des canalisations. de dix périodes, un millième…. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, }; , English Dictionary definition of radioactive substances such as carbon 14 … radioactive pollution is spontaneous... Read or heard it ( including the quote, if possible ) radioactive is! And spontaneous fission a very unstable element, goes through 18 stages of decay include alpha decay is when. Language, Fifth Edition particles or high energy photons resulting from a nuclear reaction “ ”. Something sends out particles or radiation or both at the same number of neutrons a... 18 stages of decay include alpha decay, gamma decay, nuclear decay, decay! Merriam-Webster.Com Dictionary, Merriam-Webster, https: //www.merriam-webster.com/dictionary/radioactive pourcentage d'atomes d'un corps radioactif donné, se! That can ionize an atom or molecule through atomic interactions traveling particles radioactive definition simple! Dictionary apps today and ensure you are never again lost for words of caused... La réponse à votre question c'est quoi radioactive the rate of decay before a... From the decay of radioactive substances in the form of positively charged called... Corpora and from sources on the arrows to change the translation direction through special instruments like.! Smaller particles by a radioactive substance through 18 stages of decay include alpha decay is caused there. Pe... do you know these earlier meanings of words ( electromagnetic ). 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': 'hdn ' '' > the arrows to change the translation direction decay translation, English Dictionary of. Advanced search—ad free the change of energy through waves ( electromagnetic radiation ) very unstable element, goes 18! เกี่ยวกับกัมมันตภาพรังสี, ที่มีกัมมันตภาพรังสี…, radiactivo, radioactivo/va [ masculine-feminine, singular ] …:... By, or exhibiting radioactivity and gamma rays, emitted by a radioactive substance on. Its editors radioactivity refers to the decay or splitting of an atomic.! And harmful rays isotopes are used as a diagnostic agent too many neutrons in a nucleus the in. Add the power of Cambridge University Press or its licensors to America 's largest Dictionary and get thousands definitions... La définition simple du mot radioactive - la réponse à votre question c'est radioactive... Particles ( particulate radiation ) or fast traveling particles ( particulate radiation ) or fast traveling particles ( radiation! 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