Definition
In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, ice crystals, or other particles, suspended in the atmosphere of a planetary body or similar space. Water, primarily, comprises the droplets and crystals. On Earth, clouds are formed as a result of saturation of the air when it is cooled to its dew point, or when it gains sufficient moisture, usually in the form of water vapor, from an adjacent source to raise the dew point to the ambient temperature.
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Earth ObservatoryNOAANacreous cloudNational Aeronautics and Space AdministrationNational Oceanic and Atmospheric AdministrationNational Weather ServiceNatural environmentNatureNature-based solutionsNephrologyNeptuneNimbostratusNimbostratus cloudNimbostratus virgaNitric acidNoctilucentNoctilucent cloudNomenclatureNor'easterNorthern AustraliaOceanOkanaganOld EnglishOnline Etymology DictionaryOpacus (cloud variety)OrganismOrographicOrographic liftOvershooting topPareidoliaParticleParticulatesPerlucidus (cloud variety)Pileus (meteorology)Pillar of Fire (theophany)Pillar of cloudPiraeusPlanetPlantPlate tectonicsPlymouth State UniversityPolar frontPolar highPolar lowPolar regionPolar stratospheric cloudPotential temperaturePrecipitable waterPrecipitationPressurePressure-gradient forcePressure gradientProkaryoteProtistPublic domainRadiationRainRain and snow mixedRainstormReflection (physics)Relative humidityRhetoricRoyal Netherlands Meteorological InstituteSaltSaturnScatteringScud (cloud)Sea surface temperatureSeasonSevere weatherSevere weather terminology (Canada)Severe weather terminology (Japan)Severe weather terminology (United States)Significant tornado parameterSimoomSiroccoSixth Assessment ReportSlushSnowSnow grainsSnow rollerSnow squallSocratesSolar SystemSolar radiationSophistrySpaceSpring (season)Station modelStormStorm surgeStratocumulusStratocumulus castellanus cloudStratocumulus cloudStratocumulus floccus cloudStratocumulus lenticularisStratocumulus stratiformisStratocumulus undulatusStratocumulus volutusStratosphereStratosphericStratus cloudStratus nebulosusStratus silvagenitusSubtropical cycloneSubtropical ridgeSulfur dioxideSulfuric acidSummerSunSunlightSunshine durationSupercellSurface weather analysisSurface weather observationSwifts CreekTed FujitaTemperate regionsTemperatureTemperature anomalyThe CloudsThe Conversation (website)The Free DictionaryTheodore von KármánThermodynamic temperatureThundersnowThunderstormTideTimeTimeline of meteorologyTitan 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