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1. WordNet® 3.0 (2006) |
half-life
n 1: the time required for something to fall to half its initial
value (in particular, the time for half the atoms in a
radioactive substance to disintegrate) [syn: half life,
half-life]
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2. The Collaborative International Dictionary of English v.0.48 |
Half-life \Half"-life`\ (h[aum]f"l[imac]f`), n. (Physics)
the time it takes for one-half of a substance decaying in a
first-order reaction to be destroyed. For radioactive
substances, it is the time required for one-half of the
initial amount of the radioactive isotope to decay. The
half-lifeis a measure of the rate of the reaction being
observed. For processes that are true first-order processes,
such as radioactive decay, the half-life is independent of
the quantity of material present, and it is thus a constant.
The time it takes for one-half the remaining quantity of a
radioactive isotope to decay will be the same regardless of
how far the decay process has advanced. Some chemical
reactions are also first order, and may be characterized as
having a half-life. However, for chemical reactions the
half-life will depend upon temperature and in some cases
other environmental conditions, whereas for radioactive
isotopes the rate of decay is largely independent of the
environment.
[PJC]
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Common Misspellings > |
Half-life aHalf-life aHlf-life HaHlf-life alf-life HHalf-life Hlaf-life Halaf-life Hlf-life Haalf-life Hafl-life Halfl-life Haf-life Hallf-life Hal-flife Half-flife Hal-life Halff-life Halfl-ife Half-l-ife Halflife Half--life Half-ilfe Half-lilfe Half-ife Half-llife Half-lfie Half-lifie Half-lfe Half-liife Half-lief Half-lifef Half-lie Half-liffe Half-liefe Half-lif Half-lifee talf-life htalf-life thalf-life yalf-life hyalf-life yhalf-life ualf-life hualf-life uhalf-life galf-life hgalf-life ghalf-life jalf-life hjalf-life jhalf-life balf-life hbalf-life bhalf-life nalf-life hnalf-life nhalf-life malf-life hmalf-life mhalf-life alf-life h alf-life half-life Hqlf-life Haqlf-life Hqalf-life Hwlf-life Hawlf-life Hwalf-life Hslf-life Haslf-life Hsalf-life Hxlf-life Haxlf-life Hxalf-life Hzlf-life Hazlf-life Hzalf-life H lf-life Ha lf-life H alf-life Helf-life Hilf-life Holf-life Hulf-life Haif-life Halif-life Hailf-life Haof-life Halof-life Haolf-life Hapf-life Halpf-life Haplf-life Hakf-life Halkf-life Haklf-life Ha,f-life Hal,f-life Ha,lf-life Ha.f-life Hal.f-life Ha.lf-life Hale-life Halfe-life Halef-life Halr-life Halfr-life Halrf-life Halt-life Halft-life Haltf-life Hald-life Halfd-life Haldf-life Halg-life Halfg-life Halgf-life Halc-life Halfc-life Halcf-life Halv-life Halfv-life Halvf-life Halb-life Halfb-life Halbf-life Hal -life Half -life Hal f-life Half0life Half-0life Half0-life Halfplife Half-plife Halfp-life Half-iife Half-liife Half-ilife Half-oife Half-loife Half-olife Half-pife Half-lpife Half-plife Half-kife Half-lkife Half-klife Half-,ife Half-l,ife Half-,life Half-.ife Half-l.ife Half-.life Half-l8fe Half-li8fe Half-l8ife Half-l*fe Half-li*fe Half-l*ife Half-l9fe Half-li9fe Half-l9ife Half-lufe Half-liufe Half-luife Half-lofe Half-liofe Half-loife Half-ljfe Half-lijfe Half-ljife Half-lkfe Half-likfe Half-lkife Half-llfe Half-lilfe Half-llife Half-lafe Half-lefe Half-liee Half-lifee Half-liefe Half-lire Half-lifre Half-lirfe Half-lite Half-lifte Half-litfe Half-lide Half-lifde Half-lidfe Half-lige Half-lifge Half-ligfe Half-lice Half-lifce Half-licfe Half-live Half-lifve Half-livfe Half-libe Half-lifbe Half-libfe Half-li e Half-lif e Half-li fe Half-lif3 Half-life3 Half-lif3e Half-lif# Half-life# Half-lif#e Half-lif4 Half-life4 Half-lif4e Half-lifw Half-lifew Half-lifwe Half-lifr Half-lifer Half-lifre Half-lifs Half-lifes Half-lifse Half-lifd Half-lifed Half-lifde Half-liff Half-lifef Half-liffe Half-lifa Half-lifi Half-lifo Half-lifu Definition commonly spelled as: Defanition or Defenition, Synonym as: Synonim, Sinonym or Sinonim, Thesaurus as: Thesorus or Thesauris, Dictionary as: Dictionery or Dictionry and Define is usually not misspelled. What does mispell meen? It Meens...
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