Definitions of replication:

• noun:   the repetition of an experiment in order to test the validity of its conclusion

  Example: "Scientists will not believe an experimental result until they have seen at least one replication"

• noun:   (law) a pleading made by a plaintiff in reply to the defendant's plea or answer
• noun:   (genetics) the process whereby DNA makes a copy of itself before cell division
• noun:   the act of making copies
• noun:   copy that is not the original; something that has been copied
• noun:   the persistence of a sound after its source has stopped
• noun:   a quick reply to a question or remark (especially a witty or critical one)