n. 1.the act of making copies 2.(genetics) the process whereby DNA makes a copy of itself before cell division 3.a quick reply to a question or remark (especially a witty or critical one) 4.(law) a pleading made by a plaintiff in reply to the defendant's plea or answer 5.the persistence of a sound after its source has stopped 6.copy that is not the original 7.the repetition of an experiment in order to test the validity of its conclusion
