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8/18: Word of the Day

Posted by on Aug. 18, 2016 at 12:30 PM
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opacus
\oh-PEY-kuh s\
adjective
1. Meteorology. (of a cloud) dense enough to obscure the sun or moon.
Quotes
What is the cloudspotter to do when the cloud layer has grown thick enough to be of the opacus, rather than the translucidus, variety, so that it doesn't show the position of the sun or moon?
-- Gavin Pretor-Pinney,
The Cloudspotter's Guide: The Science, History, and Culture of Clouds, 2006
Origin of opacus
Opacus is a New Latin construction that stems from the Latin opācus meaning "shaded."


by on Aug. 18, 2016 at 12:30 PM
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tvschiulaz
by VickyBullentineQueen on Aug. 28, 2016 at 11:38 AM

I guess this is where the word opaque comes from?


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