above+ground
81above — above; above·ground; above·proof; above·board; above·stairs; …
82Ground effect in aircraft — Aircraft may be affected by a number of ground effects, aerodynamic effects due to a flying body s proximity to the ground.One of the most important of these effects is the Wing In Ground effect, which refers to the reduction in drag experienced… …
83Ground effect vehicle — A ground effect vehicle, wing in ground effect vehicle (WIG), flarecraft, sea skimmer, ekranoplan, or wing in surface effect ship (WISE) is a vehicle that attains level flight near the surface of the Earth, made possible by a cushion of high… …
84ground — {{Roman}}I.{{/Roman}} noun 1 solid surface of the earth ADJECTIVE ▪ firm, hard, solid ▪ muddy, soft ▪ damp, wet …
85Ground (electricity) — In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth. A typical earthing… …
86ground — ground1 W1S1 [graund] n ▬▬▬▬▬▬▬ 1¦(earth)¦ 2¦(area of land)¦ 3¦(reason)¦ 4¦(subject)¦ 5¦(opinion)¦ 6¦(sport)¦ 7 hold/stand your ground 8 get off the ground 9 gain ground 10 lose ground …
87Above mean sea level — The term above mean sea level (AMSL) refers to the elevation (on the ground) or altitude (in the air) of any object, relative to the average sea level datum. AMSL is used extensively in radio (both in broadcasting and other telecommunications… …
88Ground Zero Indicator — The Ground Zero Indicator, known by the accronym GZI was a specially designed shadowgraph instrument used by the British Royal Observer Corps during the Cold War to locate the Ground Zero of any nuclear explosion.OverviewThe GZI consisted of four …
89ground — [[t]gra͟ʊnd[/t]] ♦ grounds, grounding, grounded 1) N SING: the N The ground is the surface of the earth. Forty or fifty women were sitting cross legged on the ground... We slid down the roof and dropped to the ground. ● PHRASE Something that is… …
90above obstruction level — The height of an aircraft above terrain, structures, and obstacles in the area of operation. The height is nominated for aircraft carrying out very low flying. Pilots either take into consideration heights indicated on maps and charts when… …
