altitude sickness

1. 1.

   effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes

   Broaderhypoxia

   Narrowermountain sickness

Questions about altitude sickness

What does altitude sickness mean?

altitude sickness means "effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes".

Is altitude sickness a common word?

altitude sickness is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.