altitude sickness altitude • altitudinal · · · Info · Definitions · Characters · · altitude sickness · · Text Common · · Latin · · Scripts 17 · · Length 5 · · Syllables Definitions · · · (noun) effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes. Synonyms: altitude sickness. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075