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What do a.m. and p.m. stand for?

impermanent

[im-pur-muh-nuh nt] /ɪmˈpɜr mə nənt/
adjective
1.
not permanent or enduring; transitory.
Origin of impermanent
1645-1655
1645-55; im-2 + permanent
Related forms
impermanence, impermanency, noun
impermanently, adverb
Synonyms
fleeting, temporary, ephemeral, evanescent.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for impermanence

impermanent

/ɪmˈpɜːmənənt/
adjective
1.
not permanent; fleeting; transitory
Derived Forms
impermanence, impermanency, noun
impermanently, adverb
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
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Word Origin and History for impermanence
n.

1796, from impermanent + -ence. Impermanency is from 1640s.

impermanent

adj.

1650s, from assimilated form of in- "not, opposite of" (see in- (1)) + permanent.

Online Etymology Dictionary, © 2010 Douglas Harper
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