re·sponse (r?-sp?ns?)n.1. The act of responding.2. A reply or an answer.3. A reaction, as that of an organism or a mechanism, to a specific stimulus: a microphone’s response to certain frequencies; response by the immune system to a pathogen.4. a. Ecclesiastical Something that is spoken or sung by a congregation or choir in answer to the officiating minister or priest.b. A responsory.[Middle English respons, from Old French, from Latin resp?nsum, from neuter past participle of respond?re, to respond; see respond.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.response (r??sp?ns) n1. the act of responding; reply or reaction2. (Bridge) bridge a bid replying to a partner’s bid or double3. (Ecclesiastical Terms) (usually plural) Christianity a short sentence or phrase recited or sung by the choir or congregation in reply to the officiant at a church service4. (Electronics) electronics the ratio of the output to the input level, at a particular frequency, of a transmission line or electrical device5. (Physiology) any pattern of glandular, muscular, or electrical reactions that arises from stimulation of the nervous system[C14: from Latin r?sponsum answer, from r?spond?re to respond] re?sponseless adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014re?sponse (r??sp?ns) n. 1. an answer; reply; rejoinder. 2. any behavior of a living organism that results from an external or internal stimulus. 3. a verse, sentence, phrase, or word said or sung by the choir or congregation in reply to the officiant in a religious service. [1250?1300; Middle English respounse