noun, plural cu·mu·lus.
Origin of cumulus
Examples from the Web for cumulus
Cumulus Media, which now owns the former Dial Global, declined to comment on the suit for this story.
“We've had a tough go of it this last year,” Cumulus CEO Lew Dickey said Tuesday morning.
All the rest is torn stratus and cumulus, which needs to condense a little further before it becomes nimbus.
These heaped clouds, known as cumulus, are a guarantee of a normal atmosphere and continued fair weather.
In "The Cumulus" we "see skyward great cloud masses rolling, silently swelling and mixing."Watts (1817-1904)|William Loftus Hare
The Cumulus, from the heaped appearance presented by the convex masses which form this cloud.The Rain Cloud|Anonymous
There is a slight protuberance on the caudal lobe, which is possibly the remnant of the cumulus.The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
British Dictionary definitions for cumulus
noun plural -li (-ˌlaɪ)
Word Origin for cumulus
Word Origin and History for cumulus
1650s, "a heap," from Latin cumulus "a heap, pile, mass, surplus," from PIE *ku-m-olo-, suffixed shortened form of root *keue- "to swell" (cf. Sanskrit svayati "swells up, is strong," Greek kyein "to swell," Lithuanian šaunas "firm, solid, fit, capable"). Meteorological use for "rounded mass of clouds" first attested 1803.