n An answer or reply, or something in the nature of an answer or reply.
n The act of responding or replying; reply: as, to speak in response to a question.
n An oracular answer.
n (liturgics) A verse, sentence, phrase, or word said or sung by the choir or congregation in sequence or reply to the priest or officiant.
n (liturgics) A versicle or anthem said or sung during or after a lection; a respond or responsory.
n A reply to an objection in formal disputation.
n An online advertising performance metric representing one click-through from an online ad to its destination URL.
n A reaction to a stimulus or provocation.