cloud

1 of 2

noun

1
: a visible mass of particles of condensed vapor (such as water or ice) suspended in the atmosphere of a planet (such as the earth) or moon
2
: something resembling or suggesting a cloud: such as
a
: a light filmy, puffy, or billowy mass seeming to float in the air
a cloud of blond hair
a ship under a cloud of sail
b(1)
: a usually visible mass of minute particles suspended in the air or a gas
(2)
: an aggregation of usually obscuring matter especially in interstellar space
(3)
: an aggregate of charged particles (such as electrons)
c
: a great crowd or multitude : swarm
clouds of mosquitoes
3
: something that has a dark, lowering, or threatening aspect
clouds of war
a cloud of suspicion
4
: something that obscures or blemishes
a cloud of ambiguity
5
: a dark or opaque vein or spot (as in marble or a precious stone)
6
: the computers and connections that support cloud computing
storing files in the cloud
often used before another noun
cloud storage/backup
cloud software
cloudlike adjective
or cloud-like
cloudlike swirls
cloudlike chocolate mousse

Illustration of cloud

Illustration of cloud
  • 1 cirrus
  • 2 cirrostratus
  • 3 cirrocumulus
  • 4 altostratus
  • 5 altocumulus
  • 6 stratocumulus
  • 7 nimbostratus
  • 8 cumulus
  • 9 cumulonimbus
  • 10 stratus

cloud

2 of 2

verb

clouded; clouding; clouds

intransitive verb

1
: to grow cloudy
usually used with over or up
clouded over before the storm
2
a
of facial features : to become troubled, apprehensive, or distressed in appearance
her face clouded with worry
b
: to become blurry, dubious, or ominous
often used with over
the outlook is clouding over
3
: to billow up in the form of a cloud

transitive verb

1
a
: to envelop or hide with or as if with a cloud
b
: to make opaque especially by condensation of moisture
steam clouded the windows
c
: to make murky especially with smoke or mist
smoke clouded the sky
2
: to make unclear or confused
cloud the issue
3
: taint, sully
a clouded reputation
4
: to cast gloom over
cloud prospects for success

Examples of cloud in a Sentence

Noun The sun is shining and there's not a cloud in the sky. flying high above the clouds It stopped raining and the sun poked through the clouds. a cloud of cigarette smoke The team has been under a cloud since its members were caught cheating. There's a cloud of controversy hanging over the election. Verb greed clouding the minds of men These new ideas only cloud the issue further. The final years of her life were clouded by illness.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
But other places are gone, in a cloud of dust, and in their place are gleaming new things. Miami Herald Archives, Miami Herald, 7 Apr. 2025 Later reports claimed that the plane had been hit by Russian shrapnel targeting Ukrainian drones, but the aircraft had already been struggling before the hit, having flown into a cloud of thick fog while losing satellite positioning data. Tereza Pultarova, Space.com, 7 Apr. 2025
Verb
The sound design suddenly feels submerged in water—the men, their vision clouded by smoke and their bodies covered with dust, struggle to rise to their feet. Justin Chang, New Yorker, 4 Apr. 2025 With travel a discretionary item for many consumers and businesses, growing odds of weak economic growth and high inflation have clouded the outlook for the remainder of the year as well. Rajesh Kumar Singh, USA Today, 28 Mar. 2025 See All Example Sentences for cloud

Word History

Etymology

Noun

Middle English, rock, cloud, from Old English clūd; perhaps akin to Greek gloutos buttock

First Known Use

Noun

14th century, in the meaning defined at sense 1

Verb

1562, in the meaning defined at intransitive sense 1

Time Traveler
The first known use of cloud was in the 14th century

Browse Nearby Words

Cite this Entry

“Cloud.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cloud. Accessed 13 Apr. 2025.

Kids Definition

cloud

1 of 2 noun
1
: a visible mass of particles of water or ice in the form of fog, mist, or haze usually high in the air
2
a
: a usually visible mass of tiny particles in the air or bits of matter between stars
b
: a group of charged particles (as electrons)
3
: something resembling or thought to be like a cloud
a cloud of mosquitoes
under a cloud of suspicion
4
: something that appears dark or threatening
clouds of war
5
: the computers and connections that support cloud computing
storing files in the cloud
cloudless
-ləs
adjective

cloud

2 of 2 verb
1
: to make or become cloudy
2
: to darken or hide with or as if by a cloud
smog clouded our view

More from Merriam-Webster on cloud

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!