Dictionary![]() ![]() tri•me•tal•licPronunciation: (trī"mu-tal'ik), [key] —adj. 1. of three metals. 2. Engraving.(of an offset plate) consisting of a face layer of chromium, stainless steel, or chemically prepared aluminum over a layer of copper with a strengthening backup layer of steel or other metal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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