Cumulus

//ˈkjuː.mjə.ləs// noun

noun ·Uncommon ·College level

Definitions

Noun
  1. 1
    A large white, puffy cloud that develops through convection.

    "In the sketch (which is taken about 75 Jovian days after that of the 2nd July) there is shown a dark copper-coloured streak along the southern margin of the south brown belt, butting on to a bluff-headed streak of cumulus cloud which may be the same remarkable bluff head noticed on July 2."

  2. 2
    a collection of objects laid on top of each other wordnet
  3. 3
    A mound or heap.
  4. 4
    a globular cloud wordnet
Adjective
  1. 1
    of or related to cumulous clouds wordnet

Example

More examples

"In the sketch (which is taken about 75 Jovian days after that of the 2nd July) there is shown a dark copper-coloured streak along the southern margin of the south brown belt, butting on to a bluff-headed streak of cumulus cloud which may be the same remarkable bluff head noticed on July 2."

Etymology

Borrowed from Latin cumulus. Doublet of comble.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.