- a heap; pile.
- a cloud of a class characterized by dense individual elements in the form of puffs, mounds, or towers, with flat bases and tops that often resemble cauliflower: as such clouds develop vertically, they form cumulonimbus.
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.The Godfather of Right-Wing Radio
November 23, 2014
“We've had a tough go of it this last year,” Cumulus CEO Lew Dickey said Tuesday morning.
The moon was now well up, but hidden by a mass of cumulus cloud.As We Sweep Through The Deep
I have, however, failed to meet with any trace of the cumulus in my sections.The Works of Francis Maitland Balfour, Volume 1
Francis Maitland Balfour
As the Cumulus belongs to the day, so does the Stratus to the night.The Rain Cloud
There were cumulus clouds of varying closeness all the time.Farthest North
It is of interest to note the appearance of the sky when cumulus clouds are present.Visual Illusions
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.
- A dense, white, fluffy cloud with a flat base, a multiple rounded top, and a well-defined outline. The bases of cumulus clouds form primarily in altitudes below 2,000 m (6,560 ft), but their tops can reach much higher. Cumulus clouds are generally associated with fair weather but can also bring rain when they expand to higher levels. The clouds' edges are well-defined when they are composed of water droplets and fuzzy when made up of ice crystals. See illustration at cloud.