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emanation

[ em-uh-ney-shuhn ]
/ ˌɛm əˈneɪ ʃən /
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noun

an act or instance of emanating.
something that emanates or is emanated.
Physical Chemistry. a gaseous product of radioactive disintegration, including radon, thoron, and actinon. Symbol: Em

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Origin of emanation

1560–70; <Late Latin ēmānātiōn- (stem of ēmānātiō), equivalent to ēmānāt(us) (see emanate) + -iōn--ion
em·a·na·tion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for emanation

emanation
/ (ˌɛməˈneɪʃən) /

noun

an act or instance of emanating
something that emanates or is produced; effusion
a gaseous product of radioactive decay, such as radon
emanational, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for emanation

emanation
[ ĕm′ə-nāshən ]

n.

Something that issues from a source; an emission.
Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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