anneal

hehkuttaa, mellottaa puhekieltä To subjectVerb subject to great heat and then (often slow) cooling, and sometimes reheating and further cooling, for the purpose of renderVerb rendering less brittle; to temper; to toughen.
(quote-journal)
(quote-book)|seriesvolume=no. 42; 50th w:United States Congress|Congress, 2d session, w:United States House of Representatives|House of Representatives Miscellaneous Documents; no. 137|location=Washington, D.C.|publisher=w:United States Government Publishing Office|Government Printing Office|year=1887|year_published=1889|volume=VII|page=123|pageurl=https://books.google.com/books?id=M-mbQTOQmRkC&pg=PA123|oclc=881832145|passage=On closer inspection it appeared that steel annealed at 100° is, cæteris paribus, more easily soluble than glass hard steel; steel annealed at 200° more easily soluble than steel annealed at 100°, and steel annealed at 360° more easily soluble than steel annealed at 200°. (..) These curious results were substantiated by annealing one-half of short glass hard rods (ca. 5cm in length) at red heat on dissolving in HCl, the diameter of the soft length is diminished more rapidly than the diameter of the hard length.
(quote-book)|year=1970|page=5|oclc=912401876|passage=The isolated disordered regions and the amorphous layer have widely different anneal behavior. In the case of germanium and silicon, the isolated disordered regions anneal at moderate temperatures of approximately 200° and 300° C, respectively. The amorphous layers also anneal in a characteristic fashion, but at appreciably higher temperatures, i.e., at approximately 600° C in silicon and 400° C in germanium. It should be noted that even though both types of disorder can be annealed at temperatures well below those where diffusion of the dopant species occurs, there are still defects present.
(quote-book)
puhekieltä To strengthen or harden.

(ux)