nine-thousander

Noun

 * 1) Any mountain that extends more than 9,000 metres (29,528 ft) from the surface.
 * 2) Any mountain that extends more than 9,000 feet but less than 10,000 feet above sea level.
 * 1) Any mountain that extends more than 9,000 feet but less than 10,000 feet above sea level.

Usage notes

 * Since is only 8,848 metres tall, there are no nine-thousanders (sense 1) on Earth. Usage of sense 1 this term is either theoretical or referring to an extraterrestrial mountain.