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noun, often attributive \ˈklau̇d\

Simple Definition of cloud

  • : a white or gray mass in the sky that is made of many very small drops of water

  • : a large amount of smoke, dust, etc., that hangs in the air

  • : a large group of things (such as insects) that move together through the air

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cloud

  1. 1 :  a visible mass of particles of condensed vapor (as water or ice) suspended in the atmosphere of a planet (as the earth) or moon

  2. 2 :  something resembling or suggesting a cloud: 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 (as electrons) c :  a great crowd or multitude :  swarm <clouds of mosquitoes>

  3. 3 :  something that has a dark, lowering, or threatening aspect <clouds of war> <a cloud of suspicion>

  4. 4 :  something that obscures or blemishes <a cloud of ambiguity>

  5. 5 :  a dark or opaque vein or spot (as in marble or a precious stone)

  6. 6 :  the computers and connections that support cloud computing <storing files in the cloud>

Examples of cloud in a sentence

  1. The sun is shining and there's not a cloud in the sky.

  2. flying high above the clouds

  3. It stopped raining and the sun poked through the clouds.

  4. a cloud of cigarette smoke

  5. The team has been under a cloud since its members were caught cheating.

  6. There's a cloud of controversy hanging over the election.

Illustration of cloud

Origin and Etymology of cloud

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

First Known Use: 14th century

Other Climate/Meteorology Terms




Simple Definition of cloud

  • : to confuse (a person's mind or judgment)

  • : to make (something, such as an issue or situation) difficult to understand

  • : to affect (something) in a bad way

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cloud

  1. intransitive verb
  2. 1 :  to grow cloudy —usually used with over or up <clouded over before the storm>

  3. 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>

  4. 3 :  to billow up in the form of a cloud

  5. transitive verb
  6. 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>

  7. 2 :  to make unclear or confused <cloud the issue>

  8. 3 :  taint, sully <a clouded reputation>

  9. 4 :  to cast gloom over <cloud prospects for success>

Examples of cloud in a sentence

  1. greed clouding the minds of men

  2. These new ideas only cloud the issue further.

  3. The final years of her life were clouded by illness.


First Known Use of cloud


CLOUD Defined for Kids



noun \ˈklau̇d\

Definition of cloud for Students

  1. 1 :  a visible mass of tiny bits of water or ice hanging in the air usually high above the earth

  2. 2 :  a visible mass of small particles in the air <a cloud of dust>

  3. 3 :  a large number of things that move together in a group <a cloud of mosquitoes>

  4. 4 :  an overwhelming feeling <The news cast a cloud of gloom.>

  5. 5 :  the computers and connections that support cloud computing


\-ləs\ adjective




Definition of cloud for Students



  1. 1 :  to make or become cloudy <The sky clouded up.>

  2. 2 :  to have a bad effect on <Involvement in the crime clouded his future.>

  3. 3 :  to make confused <Doubts clouded her judgment.>

Seen and Heard

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