at·mo·sphere noun \ˈat-mə-ˌsfi(ə)r\
: the whole mass of air surrounding the earth
: a unit of pressure equal to the pressure of the air at sea level or to 101,325 pascals or to approximately 14.7 pounds per square inch
—at·mo·spher·ic \ˌat-mə-ˈsfi(ə)r-ik, -ˈsfer-\ adjective
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