- response [ri späns′]n.[ME respounse < ML respons < L responsum, neut. of responsus, pp. of respondere: see RESPOND]1. something said or done in answer; reply or reaction2. Eccles.a) a word or words used in replying to or affirming a prayer, reading, or exhortationb) RESPONSORY3. Electronics the ratio of the output to the input, as for a given frequency, of a device or system operating under specified conditions4. Physiol. Psychol. any biological reaction or behavior resulting from the application of a stimulus
English World dictionary. V. Neufeldt. 2014.