acierationn.

1852 R. Burn Naval & Mil. Techn. Dict. French Lang. (ed. 2) i. 145/1 Bars of iron introduced into a cementing furnace, to enable the founder to ascertain the state of acieration which the metal has attained.

1880 Encycl. Brit. XIII. 342/1 This prevents the ready access of carbon and carbon oxide to the covered-up part, and hence hinders or entirely prevents acieration thereat.

1901 U.S. Patent 680,781 4/1 In acieration..an atmosphere of carbon monoxid under pressure would be maintained around the materials under treatment.

1965 D. S. Landes in H. J. Habakkuk & M. M. Postan Cambr. Econ. Hist. Europe VI. v. 482 The ore..yielded pig iron too impure to serve as a base for acieration by puddling.