light scattered or diffused in the air by dust, haze, etc., especially as it limits the visibility of distant, dark objects by causing them to blend with the background sky.
straight; direct; traveling a direct route: Some railroads advertise air-line routes between stations. Historical Examples Vogel’s suspicion of an air-line in the spectrum of Vesta has, accordingly, not been confirmed. A Popular History of Astronomy During the Nineteenth Century Agnes M. (Agnes Mary) Clerke Tupelo is about forty miles south of Rienzi, on an air-line. […]
straight; direct; traveling a direct route: Some railroads advertise air-line routes between stations. Aeronautics. a system furnishing air transport, usually scheduled, between specified points. the airplanes, airports, etc., of such a system. Often, airlines. a company that owns or operates such a system. a direct line; beeline. an airhose used to pipe air to a […]
a passenger aircraft operated by an . Contemporary Examples When 239 people disappear on an airliner, who takes the hot seat? Aviation Leaders Went Missing Along With MH370 Clive Irving May 6, 2014 Beck was totally unaware that earlier that morning the Soviets had shot down a Korean airliner in the Sea of Japan. The […]
- Air lock
Civil Engineering. an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure. the impedance in the functioning of a pump or a system of piping caused by the presence of an air bubble; vapor lock. to place in or confine to an air […]