[re.sponse] n [ME & L; ME respounse, fr. MF respons, fr. L responsum reply, fr. neut. of responsus, pp. of respondere] (14c) 1: an act of responding
2: something constituting a reply or a reaction: as a: a verse, phrase, or word sung or said by the people or choir after or in reply to the officiant in a liturgical service b: the activity or inhibition of previous activity of an organism or any of its parts resulting from stimulation c: the output of a transducer or detecting device resulting from a given input