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radon

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noun ra·don \ˈrā-ˌdän\

Simple Definition of radon

  • : a radioactive element which is a gas that is used medically in cancer treatments

Source: Merriam-Webster's Learner's Dictionary

Full Definition of radon

  1. :  a heavy radioactive gaseous element formed by the decay of radium — see element table

Origin and Etymology of radon

International Scientific Vocabulary, from radium


First Known Use: 1918

Rhymes with radon

aeon, add-on, agon, agone, Akan, Ambon, Amman, anon, Anshan, archon, argon, Argonne, atman, axon, bank on, barchan, baton, big on, Bion, blouson, bon ton, bonbon, boron, boson, bouillon, bring on, build on, bygone, caisson, call on, canton, capon, cast on, catch on, Ceylon, chaconne, Charon, chew on, chiffon, chiton, chrismon, Cimon, cistron, clip-on, codon, come-on, cordon, coupon, crampon, crayon, crepon, cretonne, crouton, Dacron, dead-on, Dear John, doggone, Dogon, Don Juan, exon, fall on, flacon, foregone, form on, Freon, fronton, futon, Garonne, get on, Gibran, gluon, gnomon, go on, guidon, hadron, Hainan, hand on, hands-on, hang on, have on, hazan, head-on, Henan, hereon, high on, hit on, hogan, hold on, Huainan, icon, intron, ion, jargon, Jinan, jomon, kanban, kaon, Kashan, keen on, Khoisan, Kirman, koan, krypton, kurgan, Kurgan, lauan, lepton, let on, lock on, log on, look on, Luzon, macron, Masan, Medan, Memnon, meson, micron, Milan, mod con, moron, mouton, Multan, muon, natron, nekton, neon, nephron, neuron, neutron, ninon, Nippon, nylon, odds-on, Oman, Oran, Orlon, paeon, parton, Pathan, pavane, pecan, peon, Phaëthon, photon, phyton, pick on, pion, piton, plankton, pluton, pompon, prion, proton, Pusan, push on, put-on, pylon, python, racon, rag on, rayon, recon, rhyton, run-on, run on, Saint John, Saipan, salon, San Juan, Schliemann, Schumann, Shaban, shaman, shaitan, Shingon, sign on, sit on, slip-on, snap-on, solon, Solon, soupçon, soutane, stand on, stolon, stuck on, Suwon, sweet on, Taiwan, taipan, take on, tampon, taxon, Teflon, Tehran, teston, thereon, Tian Shan, tisane, torchon, toucan, toyon, trade on, trigon, Tristan, triton, trogon, try on, Tucson, turned-on, turn on, Typhon, tzigane, uhlan, Ulsan, upon, wait on, walk-on, witan, whereon, Wonsan, wonton, work on, Wuhan, xenon, Xi'an, Yukon, Yunnan, zircon


Medical Dictionary

radon

play
noun ra·don \ˈrā-dän\

Medical Definition of radon

  1. :  a heavy radioactive gaseous element of the group of inert gases formed by disintegration of radium and used similarly to radium in medicine—symbol Rn; called also radium emanation; see element table




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