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arcus
[ ahr-kuhs ]
noun
, Meteorology.
, plural ar·cus.
- a dense, horizontal, roll-shaped cloud sometimes occurring at the lower front portion of a cumulonimbus.
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Word History and Origins
Origin of arcus1
< Latin: bow, arch
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Example Sentences
Cum hoc arcus ejus extenditur, et primo sagittam in partem contrariam transmittit, et unum interficit.
From Project Gutenberg
The frustules are curved or arcuate (arcus, a bow) in the side view, oblong and narrowed at the ends in the front view.
From Project Gutenberg
Du Cange gives arcus sellae equestris as one of the meanings of circus.
From Project Gutenberg
They are called arcus horarum inequalium, as they shew the 'houres inequales.'
From Project Gutenberg
Its claim, as the parent of projectile implements, is recognized in the common etymology of arcus, arcualia—artillery.
From Project Gutenberg
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