The living creature is a self-stoking, self-repairing, and also—it may be noted in passing—a self-reproducing engine.
A man is a self-reproducing machine, and an iron machine is one that has to be reproduced by somebody else.
1610s, "to produce again," from re- "again" + produce (v.), probably on model of French reproduire (16c.). Sense of "make a copy" is first recorded 1850; that of "produce offspring" is from 1894. Related: Reproduced; reproducing.
reproduce re·pro·duce (rē'prə-dōōs', -dyōōs')v. re·pro·duced, re·pro·duc·ing, re·pro·duc·es
To produce a counterpart, an image, or a copy of something.
To bring something to mind again.
To generate offspring by sexual or asexual means.