arcus
[ ahr-kuhs ]
noun,plural ar·cus.Meteorology.
a dense, horizontal, roll-shaped cloud sometimes occurring at the lower front portion of a cumulonimbus.
Origin of arcus
1<Latin: bow, arch
- Also called roll cloud.
Words Nearby arcus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use arcus in a sentence
Cum hoc arcus ejus extenditur, et primo sagittam in partem contrariam transmittit, et unum interficit.
The Fair Maid of Perth | Sir Walter ScottThe frustules are curved or arcuate (arcus, a bow) in the side view, oblong and narrowed at the ends in the front view.
An Elementary Text-book of the Microscope | John William GriffithDu Cange gives arcus sellae equestris as one of the meanings of circus.
The Latin & Irish Lives of Ciaran | AnonymousThey are called arcus horarum inequalium, as they shew the 'houres inequales.'
Chaucer's Works, Volume 3 (of 7) | Geoffrey ChaucerIts claim, as the parent of projectile implements, is recognized in the common etymology of arcus, arcualia—artillery.
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