altitude sickness: Meaning and Definition of

al'titude sick"ness

Pronunciation: [key]
— Pathol. Pathol.
  1. a condition affecting some persons at high altitudes, caused by insufficient oxygen in the blood and characterized by dizziness, nausea, and shortness of breath.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.