Ceiling

Ceiling

(1) The heights above the earth's surface of the lowest layer of clouds or obscuring phenomena that is reported as "broken," "overcast," or "obscuration," and not classified as "thin" or "partial". (2) The maximum height above sea level in STANDARD AIR attainable by an aircraft under given conditions—see ABSOLUTE CEILING, SERVICE CEILING.

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Part of Speech: noun
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Industry/Domain: Aviation
Category: Airplanes & equipment
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ceiling

Engineering; Electronic engineering

1. The maximum possible power output from a transmitter. 2. The maximum possible current or voltage that a circuit can deliver. 3. In aviation, the level of the cloud base.

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Fire safety; Prevention & protection

In merchant vessels, a ceiling is a horizontal division within a space for the purpose of decoration, acoustics, or fire protection.

ceiling

Aviation; Aircraft

The height above the earth’s surface of the lowest layer of clouds, which is reported as broken or overcast, or the vertical visibility into an obscuration.

ceiling

Energy; Energy efficiency

The downward facing structural element that is directly opposite the floor.

ceiling

Weather; Meteorology

1. After U. S. Weather observing practice, the height ascribed to the lowest layer of clouds or obscuring phenomena when it is reported as broken, overcast, or obscuration and not ...

ceiling

Earth science; Geology

The height above the surface of the base of the lowest layer of clouds that obscures more than half the sky; reported for only broken and overcast sky cover. The ceiling may be ...

airdrop

Military; Airplanes &equipment

Goods, equipment or people parachuted from an aircraft from an altitude.

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