…the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen…
…air that is forced to enter a moving aperture, such as the air intake of an aircraft…
…protection from aircraft for land-based or naval operations in war situations…
…the branch of a nation’s armed services that conducts military operations in the air…
…a typically epiphytic, sometimes rootless, tropical American plant with grasslike or fingerlike leaves through which water and airborne or waterborne nutrients are absorbed…
…violent anger directed mainly at inflight airline personnel and arising from the frustrations and stresses of air travel…
…a straight, typically vertical passage admitting air into a mine, tunnel, or building…
…an unintended interruption of the video or audio signal during a television or radio broadcast…
…denoting or in the manner of a 19th-century style of painting outdoors, or with a strong sense of the open air, that became a central feature of French impressionism…
…a bearing in which moving surfaces are kept apart by a layer of air provided by jets…
…a device for filtering particles of dust, soot, etc., from the air passing through it, especially one protecting the air inlet of an internal combustion engine…
