noun \ˈnü-ˌträn, ˈnyü-\

physics : a very small particle of matter that has no electrical charge and is part of the nucleus of all atoms except hydrogen atoms

Full Definition of NEUTRON

:  an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus
neu·tron·ic \nü-ˈträ-nik, nyü-\ adjective

Origin of NEUTRON

probably from neutral
First Known Use: 1932

Rhymes with NEUTRON

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, 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, radon, 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


noun \ˈn(y)ü-ˌträn\   (Medical Dictionary)

Medical Definition of NEUTRON

: an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus


noun    (Concise Encyclopedia)

One of the constituent particles of every atomic nucleus except ordinary hydrogen. Discovered in 1932 by James Chadwick (1891–1974), it has no electric charge and has nearly 1,840 times the mass of the electron. Free neutrons undergo beta decay with a half-life of about 10 minutes. Thus, they are not readily found in nature, except in cosmic rays. They are a penetrating form of radiation. When bombarded with neutrons, various elements undergo nuclear fission and release more free neutrons. If enough free neutrons are produced, a chain reaction can be sustained. This process led to the development of nuclear power as well as the atomic bomb. Neutron beams produced in cyclotrons and nuclear reactors are important probes of matter, revealing details of structure in both organic and inorganic susbtances.


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