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Definition of cumulus

cumulus

/ˈkjuː.mjʊ.ləs/
cu · mu · lus
Plural:cumuli
•
Adjective:cumulous
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cumulus Lexical Profile

cumulus Game Scores & Validity

• noun

1

A low-level cloud formation characterized by dense, billowy, dome-shaped or cauliflower-like tops and a relatively flat horizontal base, typically associated with fair weather.

Example

"White cumulus drifted lazily across the bright summer sky."

2

A heap, pile, or accumulated mass of something.

Example

"Over several decades, the scholar amassed a vast cumulus of archival documents."

Synonyms
View all synonyms for cumulus

• Rhymes for cumulus

• Nearby Words

cumulation
cumulative
cumulatively
cumulus
cuneiform
cunene
cunner

Word Origin & Etymology

Borrowed directly from Latin 'cumulus', meaning 'a heap, pile, or mass'. The meteorological sense was introduced in 1803 by English chemist and amateur meteorologist Luke Howard in his pioneering classification of clouds.

Cite this Entry

Wordmom. (2026). Definition of Cumulus. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/cumulus
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