D defs.my
Entry 1 sense Webster, 1913

Atmo

· At·mo · IPA
01 n. The standard atmospheric pressure used in certain physical measurements calculations; conventionally, that pressure under which the baromet…
  1. 1.
    The standard atmospheric pressure used in certain physical measurements calculations; conventionally, that pressure under which the barometer stands at 760 millimeters, at a temperature of 0° Centigrade, at the level of the sea, and in the latitude of Paris.(Physics)