noun
: the effects (as headache, lassitude, palpitation, nosebleed, nausea) of oxygen deficiency in the blood and tissues developed in rarefied air at high altitudes
noun
: the effects (as headache, lassitude, palpitation, nosebleed, nausea) of oxygen deficiency in the blood and tissues developed in rarefied air at high altitudes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012