Noun
(aviation) The portion of an instrument landing system which provides vertical guidance to an aircraft during an approach to landing.
(aviation, by extension) The vertical descent profile produced by the ILS glideslope transmitters.
Staying on the glideslope is vitally important for a safe, stabilized approach and landing.
(aviation) The approach path of an aircraft as it comes in to land.
Source: en.wiktionary.org"You're at 67,000 feet, 81 miles out" was heard, followed by "70 miles out now, 36,000 ft, above glideslope." Source: Internet
For example, the aviation glideslope vertical guidance clearance beam is sometimes described as a "capture effect" system, even though it operates using AM signals. Source: Internet