• WordNet 3.6
    • v cloud make milky or dull "The chemical clouded the liquid to which it was added"
    • v cloud colour with streaks or blotches of different shades
    • v cloud make less clear "the stroke clouded memories of her youth"
    • v cloud place under suspicion or cast doubt upon "sully someone's reputation"
    • v cloud make gloomy or depressed "Their faces were clouded with sadness"
    • v cloud billow up in the form of a cloud "The smoke clouded above the houses"
    • v cloud make less visible or unclear "The stars are obscured by the clouds","the big elm tree obscures our view of the valley"
    • v cloud make overcast or cloudy "Fall weather often overcasts our beaches"
    • n cloud a group of many things in the air or on the ground "a swarm of insects obscured the light","clouds of blossoms","it discharged a cloud of spores"
    • n cloud a visible mass of water or ice particles suspended at a considerable altitude
    • n cloud any collection of particles (e.g., smoke or dust) or gases that is visible
    • n cloud out of touch with reality "his head was in the clouds"
    • n cloud suspicion affecting your reputation "after that mistake he was under a cloud"
    • n cloud a cause of worry or gloom or trouble "the only cloud on the horizon was the possibility of dissent by the French"
    • ***

Additional illustrations & photos:

sketch of smoke cloud sketch of smoke cloud

Webster's Revised Unabridged Dictionary
  • Interesting fact: One million cloud droplets are needed to make enough water to produce one raindrop.
    • Cloud A collection of visible vapor, or watery particles, suspended in the upper atmosphere. "I do set my bow in the cloud ."
    • Cloud A dark vein or spot on a lighter material, as in marble; hence, a blemish or defect; as, a cloud upon one's reputation; a cloud on a title.
    • Cloud A great crowd or multitude; a vast collection. "So great a cloud of witnesses."
    • Cloud A large, loosely-knitted scarf, worn by women about the head.
    • Cloud A mass or volume of smoke, or flying dust, resembling vapor. "A thick cloud of incense."
    • Cloud That which has a dark, lowering, or threatening aspect; that which temporarily overshadows, obscures, or depresses; as, a cloud of sorrow; a cloud of war; a cloud upon the intellect.
    • Cloud To blacken; to sully; to stain; to tarnish; to damage; -- esp. used of reputation or character. "I would not be a stander-by to hear
      My sovereign mistress clouded so, without
      My present vengeance taken."
    • Cloud To darken or obscure, as if by hiding or enveloping with a cloud; hence, to render gloomy or sullen. "One day too late, I fear me, noble lord,
      Hath clouded all thy happy days on earth."
      "Be not disheartened, then, nor cloud those looks.""Nothing clouds men's minds and impairs their honesty like prejudice."
    • v. i Cloud To grow cloudy; to become obscure with clouds; -- often used with up. "Worthies, away! The scene begins to cloud ."
    • Cloud To mark with, or darken in, veins or sports; to variegate with colors; as, to cloud yarn. "And the nice conduct of a clouded cane."
    • Cloud To overspread or hide with a cloud or clouds; as, the sky is clouded .
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: To make one raindrop of water, it takes approximately a million cloud droplets
    • n cloud A collection of visible vapor or watery particles suspended in the air at a considerable altitude. A like collection of vapors upon the earth is called fog. The average height of the clouds is estimated at between two and three miles, but it varies at different times of the year. The forms of clouds are indefinitely variable; they are commonly classified roughly as follows:
    • n cloud A semblance of a cloud, or something spread out like or having some effect of a cloud: commonly followed by a specification: as, a cloud of dust; a ship under a cloud of canvas (that is, a large spread of sails).
    • n cloud A clouded appearance; a dark area of color over a lighter material, or the reverse, as bloom upon a varnished surface.
    • n cloud In zoology, an illdefined, obscure, or indistinct spot or mark, often a spot produced by the internal structure seen through a semi-transparent surface.
    • n cloud Anything that obscures, darkens, threatens, or the like.
    • n cloud A multitude; a collection; a throng.
    • n cloud A woman's head-wrap made of loosely knit wool.
    • n cloud Absorbed in day-dreams; visionary; absent-minded; abstracted.
    • n cloud Out of ordinary comprehension; in the realms of fancy or non-reality.
    • n cloud = Syn. 1. Haze, Fog, etc. See rain, n.
    • cloud To overspread with a cloud or clouds: as, the sky is clouded.
    • cloud Hence To cover as if with clouds: in various figurative applications, as to obscure, darken, render gloomy or sullen, etc.: said of aspect or mood.
    • cloud To variegate with spots or waves of a darker color appearing as if laid on over a lighter, or the reverse: as, to cloud a panel; a clouded sky in a picture.
    • cloud To place under a cloud, as of misfortune, disgrace, etc.; sully; tarnish: as, his character was clouded with suspicion.
    • cloud To grow cloudy; become obscured with clouds: sometimes with up.
    • n cloud A rock; a hill.
    • n cloud Feussner's method, which consists in observing the location on the map of the shadow of a cloud and at the same time observing the altitude of the sun. The formulæ needed for calculation are given in Abbe's “Meteorological Apparatus and Methods” (1887).
    • n cloud The kinematic method (employed in connection with Abbe's marine nephoscope), in which observations give two zenithal apparent movements of the cloud for two corresponding known movements of the observer on a boat or wagon: eight quantities, that is directions and rates of motion, are thus known which are introduced into the analytical trigonometrical equation, and the true altitude and motion of the cloud are found by elimination.
    • n cloud Lambert's method, which consists in observing the velocity of the shadow of the cloud on the ground and also the apparent angular velocity of the cloud at the zenith, whence the altitude or distance is calculated by trigonometrical formulæ.
    • n cloud Trigonometric methods, which involve the use of the cloud-theodolite, photogrammeter, or cloud-camera.
    • n cloud Espy's dew-point method of determining the altitude of the base of a cloud, which assumes that the altitude of the base is equal to the depression of the dew-point expressed in centigrade degrees multiplied by 100 meters or expressed in degrees Fahrenheit multiplied by 186 feet.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: Fog and a cloud are the same thing, only at different altitudes. Fog is simply a cloud lying on the earth, while clouds are fog floating in the sky.
    • n Cloud klowd a mass of fog, consisting of minute particles of water, often in a frozen state, floating in the atmosphere:
    • v.t Cloud to overspread with clouds: to darken: to defame: to stain with dark spots or streaks
    • v.i Cloud to become clouded or darkened
    • adj Cloud growing dim
    • n Cloud klowd (fig.) anything unsubstantial: a great number or multitude of anything, as the New Test. 'cloud of witnesses:' anything that obscures, as a cloud: a dark spot on a lighter material: a great volume of dust or smoke: anything gloomy, overhanging, or bodeful
    • ***


  • Duke Ellington
    Duke Ellington
    “Gray skies are just clouds passing over.”
  • Source Unknown
    Source Unknown
    “Regardless of weather, the moon shines the same; it is the drifting clouds that make it seem different on different nights.”
  • William Blake
    “My mother groaned, my father wept, into the dangerous world I leapt; helpless, naked, piping loud, like a fiend hid in a cloud.”
  • Proverb
    “Every cloud has a silver lining.”
  • Don Marquis
    “Every cloud has its silver lining but it is sometimes a little difficult to get it to the mint”
  • Virgil
    “Fame hides her head among the clouds.”


Cloud cuckoo land - If someone has ideas or plans that are completely unrealistic, they are living on cloud cuckoo land.
Cloud nine - If you are on cloud nine, you are extremely happy. ('cloud seven' is a less common alternative)
Cloud of suspicion - If a cloud of suspicion hangs over an individual, it means that they are not believed or are distrusted.
Cloud on the horizon - If you can see a problem ahead, you can call it a cloud on the horizon.
Every cloud has a silver lining - People sometimes say that every cloud has a silver lining to comfort somebody who's having problems. They mean that it is always possible to get something positive out of a situation, no matter how unpleasant, difficult or even painful it might seem.
Head is in the clouds - If a person has their head in the clouds, they have unrealistic, impractical ideas.
Under a cloud - If someone is suspected of having done something wrong, they are under a cloud.


Webster's Revised Unabridged Dictionary
Prob. fr. AS. clūd, a rock or hillock, the application arising from the frequent resemblance of clouds to rocks or hillocks in the sky or air
Chambers's Twentieth Century Dictionary
A.S. clúd, a hill, then a cloud, the root idea being a mass or ball. Clod and Clot are from the same root.


In literature:

The cloud had passed away from the sun.
"The Saracen: Land of the Infidel" by Robert Shea
The clouds dashed and seethed along the surface, shutting out all landmarks.
"Wild Life on the Rockies" by Enos A. Mills
Looking south from the little stone church, you see clouds of dust floating over the forest-trees.
"My Days and Nights on the Battle-Field" by Charles Carleton Coffin
From under the metallic mass shrieked a vaporous cloud.
"Astounding Stories of Super-Science February 1930" by Various
Always poor, and for many years a cripple, I never heard her complain, and no one, I think, ever saw her face clouded with a frown.
"A Son of the Middle Border" by Hamlin Garland
At one, The Golden Cloud, more pretentious than the rest, there foregathered the leading spirits of the Valley.
"Tharon of Lost Valley" by Vingie E. Roe
Gray Cloud would not see the moon in this sky filled with clouds.
"Shaman" by Robert Shea
A light has been shining on her cheek out of that rose-colored cloud!
"Boys and Girls Bookshelf (Vol 2 of 17)" by Various
And then the cloud rolled back again; he closed his eyes, and lost consciousness in untroubled forgetfulness.
"Murder Point" by Coningsby Dawson
It's always shining, no matter if the clouds are so thick underneath that we can't see it.
"The Country Beyond" by James Oliver Curwood

In poetry:

At night on the dock
the buses glow like
clouds and I am lonely
thinking of flutes
"Morning" by Frank O Hara
On the distant rim
Lift the outlines proud,
Of their mountain walls
To the drifting cloud.
"To Russia" by Ivan Nikitin
Dark may be the clouds and dreary,
Yet the night
Melts to light
When Thou guid'st the weary.
"God our Guide" by John Bowring
When the wind stops and, over the heavens,
The clouds go, nevertheless,
In their direction.
"The Death of a Soldier" by Wallace Stevens
Sky--what a scowl of cloud
Till, near and far,
Ray on ray split the shroud:
Splendid, a star!
"Apparitions" by Robert Browning
From cupped hands
Droplets cloud
The mountain spring-
It's not enough-as from you
Am I parted.
"From cupped hands" by Ki no Tsurayuki

In news:

Formerly of Olive Hill, passed away Thursday morning, October 11, 2012, in St Cloud Hospital in St Cloud Medical Center.
Formerly of Olive Hill, passed away Thursday morning, Oct 11, 2012, in St Cloud Hospital in St Cloud, Fla. She was born Sept 1, 1941, in Carter County, a daughter of the late Cleff and Laura Jane Jones Madden .
The Energy Department is inviting researchers to apply for a space in its $32 million Magellan cloud computing evaluation program that's exploring the effectiveness of the cloud for a range of scientific computations.
Recently announced that it launched Wave Cloud, a cloud-based service for enterprise-wide management of self-encrypting drives (SEDs).
As cloud computing becomes more mature , consumer cloud environments at Google, Facebook, Microsoft and will begin cut-throat competition for consumer and business dollars.
Clouds as metaphors pepper our language: every cloud has a silver lining, I'm on cloud nine, his head is in the clouds, there are dark clouds on the horizon.
Jon Ruis clears snow from his driveway on Dec 9 in St Cloud, Minn. Jason Wachter, St Cloud (Minn.) Times.
ST CLOUD – The damage was kept to a minimum in a North St Cloud apartment fire.
CloudArray is cloud storage gateway technology that takes cloud capacity and "makes it look, feel and perform like local storage," says TwinStrata CEO Nicos Vekiarides.
NEC Cloud Simplifies Business Transformation to the Cloud.
ST CLOUD – Downtown St Cloud will be glowing as the first ever Neon Party 5k Race kicks off at 6:30 pm tonight (Saturday).
For the coming week it is expected to be clouds and cool in the daylight, clouds and substantially cooler at night, and maybe precipitation toward the end of the week.
ST CLOUD – Gas prices in the St Cloud metro area continue to fall.
ST CLOUD – A St Cloud man was robbed outside of his apartment.
ST CLOUD – St Cloud photographer Steven Sohlstrom captured this beautiful overhead view of the frozen Mississippi River in downtown St Cloud on Saturday.

In science:

BallesterosParedes, Avillez, & Mac Low (2000) show that instead, isolated, cold, dense clouds with masses and sizes typical of giant molecular clouds form in and close to the disk.
The Dynamical Interstellar Medium: Insights from Numerical Models
Since only the upper end of the luminosity function is detectable in the Magellanic Clouds, we can use luminosity estimates of their pulsars to compare the high end of the Magellanic Cloud pulsar luminosity function with that of the Galaxy.
Radio Pulsars in the Magellanic Clouds
Wilson et al. (2000) find three separate molecular clouds around W80 within a region of 1 kpc2 , and suggest that cloud-cloud collisions may play an important role in cluster formation.
The Formation of Star Clusters
Since the ram pressure in the boundary of the cloud is larger than in model DEN3, the cloud density is slightly larger too.
The nonlinear development of the thermal instability in the atomic ISM and its interaction with random fluctuations
It is worthwhile to point out that even though the development of TI may be suppressed at large scales due to mass consumption by small scales, massive clouds may form by coalescence of small clouds (see e.g., Elmegreen 1990, Murray & Lin 1996).
The nonlinear development of the thermal instability in the atomic ISM and its interaction with random fluctuations