Definition of "altitude" in English

noun

1. The absolute height of a location, usually measured from sea level.

   • As the altitude increases, the temperature gets lower, so remember to bring warm clothes to the mountains.

2. A vertical distance.

3. (geometry) The line perpendicularly connecting a figure’s vertex, especially a triangle’s apex, to the side opposite to the vertex.

   • All three altitudes of any triangle will always meet at point known as the orthocentre or orthocenter.

4. (geometry) The length of such a line; the distance measured perpendicularly from a figure's vertex to the side opposite to the vertex.

   • The perpendicular height of a triangle is known as its altitude.

5. (astronomy) The angular distance of a heavenly body above our Earth's horizon.

6. Height of rank or excellence; superiority.

7. (dated, in the plural) Elevation of spirits; heroics; haughty airs.

8. Highest point or degree.

9. (commutative algebra, dated, of a ring) Krull dimension.

10. (commutative algebra, of an ideal) Height.