altitude
/ˈæltɪtud/
noun
- The height of an object or point in relation to sea level or ground level.
- The mountain's altitude is over 8,000 meters above sea level.
- At high altitudes, the air is thinner and colder.
- The plane reached a cruising altitude of 35,000 feet.
- A high or elevated position or region.
- They moved to a town in the mountains for the cooler altitudes.
- The hikers struggled to breathe at such a high altitude.
- Plants that grow at high altitudes are often small and hardy.
- The angular distance of a celestial object above the horizon.
- Navigators used the altitude of the stars to determine their position.
- The astronomer measured the altitude of the North Star.
- At noon, the sun reaches its highest altitude in the sky.
Antonyms