the gaseous envelope surrounding the earth; the air. this medium at a given place. Astronomy. the gaseous envelope surrounding a heavenly body. Chemistry. any gaseous envelope or medium. a conventional unit of pressure, the normal pressure of the air at sea level, about 14.7 pounds per square inch (101.3 kilopascals), equal to the pressure exerted […]
an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome. a building in which this projection system is used.
pertaining to, existing in, or consisting of the : atmospheric vapors. caused by, produced by, or operated on by the : atmospheric storms. resembling or suggestive of the ; having muted tones and softened or indistinct outlines; hazy: atmospheric effects. having or producing an emotional : atmospheric quality; atmospheric lighting. Contemporary Examples atmospheric carbon-dioxide levels […]
- Atmospheric boundary layer
. the thin layer of air adjacent to the earth’s surface, usually considered to be less than 300 feet (91 meters) high.