Simple Definition of altitude
: the height of something (such as an airplane) above the level of the sea
Full Definition of altitude
1 a : the angular elevation of a celestial object above the horizon b : the vertical elevation of an object above a surface (as sea level or land) of a planet or natural satellite c (1) : a perpendicular line segment from a vertex of a geometric figure (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
2 : a high level (as of quality or feeling) <the altitudes of his anger>
3 a : vertical distance or extent b : position at a height c : an elevated region : eminence —usually used in plural
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 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
Seen and Heard
What made you want to look up altitude? Please tell us where you read or heard it (including the quote, if possible).