altitude

noun

• 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."

• A vertical distance.
• The distance measured perpendicularly from a figure's vertex to the opposite side of the vertex.

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

• The angular distance of a heavenly body above our Earth's horizon.
• Height of rank or excellence; superiority.
• (in the plural) Elevation of spirits; heroics; haughty airs.
• Highest point or degree.