Dictionary.com Word Of The Day
Aug. 18, 2016
opacus\oh-PEY-kuh s\adjective
1. Meteorology. (of a cloud) dense enough to obscure the sun or moon.
QuotesWhat is the cloudspotter to do when the cloud layer has grown
thick enough to be of theopacus, 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 opacusOpacus is a New Latin construction that stems from
the Latin opÄcus meaning "shaded."More From Dictionary.comSubmit a
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