rate of return rate of respiration • ratepayer · · · Info · Definitions · Characters · · rate of return · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) the amount returned per unit of time expressed as a percentage of the cost. Synonyms: rate of return. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075