Altitude Definition

ăltĭ-to͝od, -tyo͝od
altitudes
noun
altitudes
The height of a thing above a reference level, especially above sea level or above the earth's surface.
American Heritage
Height; esp., the height of a thing above the earth's surface or above sea level.
Webster's New World
Great height or elevation.
Has trouble breathing at altitude.
American Heritage
A high place or region.
Webster's New World
A high location or area.
American Heritage
Antonyms:
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other
The height of an object or structure above a reference level, usually above sea level or the Earth's surface.
American Heritage Science
The position of a celestial object above an observer's horizon, measured in degrees along a line between the horizon (0°) and the zenith (90°). Unlike declination and celestial latitude —the corresponding points in other celestial coordinate systems—the altitude of star or other celestial object is dependent on an observer's geographic location and changes steadily as the sky passes overhead due to the rotation of the Earth.
American Heritage Science
The perpendicular distance from the base of a geometric figure, such as a triangle, to the opposite vertex, side, or surface.
American Heritage Science

Other Word Forms of Altitude

Noun

Singular:
altitude
Plural:
altitudes

Origin of Altitude

  • Middle English from Latin altitūdō from altus high al-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English, from Latin altitudo (“height"), from altus (“high").

    From Wiktionary

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