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momentary

[moh-muh n-ter-ee] /ˈmoʊ mənˌtɛr i/
adjective
1.
lasting but a moment; very brief; fleeting:
a momentary glimpse.
2.
that might occur at any moment; ever impending:
to live in fear of momentary annihilation.
3.
effective or recurring at every moment; constant.
Origin of momentary
late Middle English
1425-1475
1425-75; late Middle English momentare < Latin mōmentārius. See moment, -ary
Related forms
momentariness, noun
intermomentary, adjective
nonmomentariness, noun
nonmomentary, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for momentary

momentary

/ˈməʊməntərɪ; -trɪ/
adjective
1.
lasting for only a moment; temporary
Derived Forms
momentariness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for momentary
adj.

"lasting a moment," mid-15c., from Latin momentarius "of brief duration," from momentum (see moment).

Online Etymology Dictionary, © 2010 Douglas Harper
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