Definition of altitude
1a : the vertical elevation of an object above a surface (such as sea level or land) of a planet or natural satelliteb : the angular elevation of a celestial object above the horizonc (1) : a perpendicular line segment from a vertex (see vertex 2a) of a geometric figure (such as a triangle or a pyramid) to the opposite side or the opposite side extended or from a side or face to a parallel side or face or the side or face extended (2) : the length of an altitude
2a : vertical distance or extentb : position at a height <The plane lost altitude.>c : an elevated region : eminence —usually used in plural
3 : a high level (as of quality or feeling) <the altitudes of his anger>
altitudinalplay \ˌal-tə-ˈtü-dən-əl, -ˈtyü-\ adjective
altitudinousplay \-dən-əs\ adjective
Examples of altitude in a sentence
the air temperature at different altitudes
Some visitors find it difficult to adjust to the city's high altitude.
The plane lost altitude rapidly.
Origin and Etymology of altitude
Middle English, from Latin altitudo height, depth, from altus high, deep — more at old
First Known Use: 14th century
Synonym Discussion of altitude
ALTITUDE Defined for English Language Learners
Definition of altitude for English Language Learners
: the height of something (such as an airplane) above the level of the sea
ALTITUDE Defined for Kids
Definition of altitude for Students
1 : height above a certain level and especially above sea level
2 : the perpendicular distance from the base of a geometric figure to the vertex or to the side parallel to the base
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