Entertainment / Literature / Atmosphere: (Also called mood) The emotional feelings inspired by a work. The term is borrowed from meteorology to describe the dominant mood of a selection as it is created by diction, dialogue, setting, and description. Often the opening scene in a play or novel establishes an atmosphere appropriate to the theme of the entire work. The opening of Shakespeare's Hamlet creates a brooding atmosphere of unease. Poe's The Fall of the House of Usher establishes an atmosphere of gloom and emotional decay. The opening of Pynchon's The Crying of Lot 49 establishes a surreal atmosphere of confusion, and so on. Compare with ambiance, above.
Science / Weather / Standard Atmosphere: A standard atmosphere has been defined by the International Civil Aeronautical Organization (ICAO). It assumes a mean sea level temperature of 15°C a standard sea level pressure of 1,013.25 millibars MORE
Technology / Aviation / Standard Air (Standard Atmosphere): An arbitrary atmosphere established for calibration of aircraft instruments. Standard Air Density is 29.92 inches of mercury and temperature of 59° F, equivalent to an atmospheric air pressure of 14. MORE