v. [UN-2 3.] trans. To restore from the effects of burning.
1815. J. Smith, Panorama Sci. & Art, II. 485. To deprive them of oxygen is virtually to unburn them.
1869. Q. Rev., CXXVI. 263. The duty of the plant, on the other hand, is to unburn carbonic acid, to sunder the molecules of that compound back again to their elements of carbon and oxygen.
Hence Unburning vbl. sb.
1866. Odling, Anim. Chem., 72. The heat absorbed in the unburning, so to speak, of the hydrogen.
