obscuration

[ob-skyoo-rey-shuhn]
noun
1.
the act of obscuring.
2.
the state of being obscured.

Origin:
1425–75; late Middle English < Latin obscūrātiōn- (stem of obscūrātiō) a darkening, equivalent to obscūrāt(us), past participle of obscūrāre (obscūr(us) dark + -ātus -ate1) + -iōn- -ion; see -ation

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World English Dictionary
obscure (əbˈskjʊə)
 
adj
1.  unclear or abstruse
2.  indistinct, vague, or indefinite
3.  inconspicuous or unimportant
4.  hidden, secret, or remote
5.  (of a vowel) reduced to or transformed into a neutral vowel ()
6.  gloomy, dark, clouded, or dim
 
vb
7.  to make unclear, vague, or hidden
8.  to cover or cloud over
9.  phonetics to pronounce (a vowel) with articulation that causes it to become a neutral sound represented by ()
 
n
10.  a rare word for obscurity
 
[C14: via Old French from Latin obscūrus dark]
 
obscuration
 
n
 
ob'scurely
 
adv
 
ob'scureness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

obscuration
late 15c., from L. obscurationem, noun of action from obscurare (see obscure).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
In fact, satellite estimates of sea surface temperature were hindered because of obscuration by the smoke.
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