trimetallic

[trahy-muh-tal-ik]

tri·me·tal·lic

[trahy-muh-tal-ik]
adjective
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.

Origin:
1885–90; tri- + metallic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Trimetallic is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
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