Pronunciation: (ri-spons'),[key] —n. 1. an answer or reply, as in words or in some action.
2. Biol.any behavior of a living organism that results from an external or internal stimulus.
3. Eccles. a. a verse, sentence, phrase, or word said or sung by the choir or congregation in reply to the officiant. Cf. versicle (def. 2).
4. Bridge.a bid based on an evaluation of one's hand relative to the previous bid of one's partner.