opacus

[oh-pey-kuhs]

adjective

Meteorology.

1. (of a cloud) dense enough to obscure the sun or moon.

Word History and Origins

Origin of opacus¹

1615–25; < New Latin, Latin opācus; opaque

Example Sentences

On Opacus, the pianist plays liquid, pirouetting figures that Vandermark suspiciously hovers and mutters around, Argenteus is soft and lyrical, caressed by Haker Flaten's purring bass, and Wiik's melody lines are flouncily ornate over his steadily trilling left hand while Vandermark unfolds long, aching clarinet notes on the steadily intensifying Fumidus.

Read more on The Guardian

Opacus: opaque; a surface without any lustre.

Read more on Project Gutenberg

Secundum moenia locus erat frondosis populis opacus, vitibusque sponte natis, tenuis prope aqua defluebat, placide murmurans, ubi sedile et domus Democriti conspiciebatur.

Read more on Project Gutenberg