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  1. Dictionary
    atmosphere
    /ˈatməsfɪə/

    noun

    More definitions, origin and scrabble points

  2. a mixture of gases that surrounds any planet: the search for planets with a breathable atmosphere. B2 [ S ] the air that you breathe in a place: The atmosphere in the room was so stuffy I could hardly breathe. A few plants in an office will improve the atmosphere. SMART Vocabulary: related words and phrases. The Earth & outer space - general words.

  3. The meaning of ATMOSPHERE is the gaseous envelope of a celestial body (such as a planet). How to use atmosphere in a sentence.

  4. An atmosphere is a blanket of gases that surrounds Earth. It is held near the surface of the planet by Earth’s gravitational attraction. Argon, oxygen and nitrogen from the three main constituents of the atmosphere. Definition.

  5. Atmosphere definition: the gaseous envelope surrounding the earth; the air. See examples of ATMOSPHERE used in a sentence.

  6. The atmosphere is a mixture of gases that surrounds the Earth. It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming from the Sun, trapping heat to warm the planet, and preventing extreme temperature differences between day and night.

  7. en.wikipedia.org › wiki › AtmosphereAtmosphere - Wikipedia

    An atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam', and σφαῖρα (sphaîra) 'sphere') is a layer of gasses that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.

  8. Jun 3, 2024 · Atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice-covered surface of a planet outward into space. The density of the atmosphere decreases outward, because the planet’s gravitational attraction, which pulls the gases and aerosols inward, is greatest close to the surface.

  9. Oct 19, 2023 · Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

  10. a standard unit of pressure used to measure atmospheric pressure, equal to the pressure exerted by a column of mercury that is 760 millimeters (29.9213 inches) high at 0°C at sea level (101,325 pascals or 1,013.25 millibars or 14.70 pounds per square inch): abbrev.

  11. An atmosphere is made of the layers of gases surrounding a planet or other celestial body. Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.