replication

(noun) the act of making copies. Synonyms: reproduction. Example: "Gutenberg's reproduction of holy texts was far more efficient."

(noun) (genetics) the process whereby DNA makes a copy of itself before cell division.

(noun) a quick reply to a question or remark (especially a witty or critical one). Synonyms: rejoinder, retort, return, riposte, comeback, counter. Example: "It brought a sharp rejoinder from the teacher."

(noun) (law) a pleading made by a plaintiff in reply to the defendant's plea or answer.

(noun) the repetition of a sound resulting from reflection of the sound waves. Synonyms: echo, reverberation, sound reflection. Example: "She could hear echoes of her own footsteps."

(noun) copy that is not the original; something that has been copied. Synonyms: replica, reproduction.

(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."