reaction time reaction ring • reaction wheel · · · Info · Definitions · Synonyms · Characters · · reaction time · · Text Common · · Latin · · Scripts 13 · · Length Definitions · · · (noun) the time that elapses between a stimulus and the response to it. Synonyms: response time, latency, latent period. · · Noun Definition 1 Synonyms · · · chemical reaction · · Synonym 1 reaction · · Synonym 2 response · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D 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