altitude

noun10

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. •
   Height.
4. •
   Highest point or degree.

   • He is [proud] even to the altitude of his virtue. — 1608
5. •
   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.
6. •
   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.
7. •
   The angular distance of a heavenly body above our Earth's horizon.
8. •
   Height of rank or excellence; superiority.

   • Whoever has an ambition to be heard in a crowd, must press, and squeeze, and thrust, and climb, with indefatigable pains, till he has exalted himself to a certain degree of altitude above them. — 1704
9. •
   [in the plural] (old-fashioned) Elevation of spirits; heroics; haughty airs.

   • The man of law began to get into his altitudes. — 1815
10. •
    (old-fashioned) Krull dimension.