From HomoExcelsior

1. A fold or a folding back. 2. A reply to an answer; a rejoinder. 3. The plaintiff's response to the defendant's answer or plea. 4. An echo or a reverberation. 5. A copy or reproduction. 6. The act or process of duplicating or reproducing something. 7. The act or process by which genetic material, a cell, or an organism reproduces or makes an exact copy of itself.

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