relative humidity relative frequency • relative incidence · · · Info · Definitions · Characters · · relative humidity · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage. Synonyms: relative humidity. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076 y latin small letter y U+0079