Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A white crystalline compound, C3H6N6, used in making melamine resins and waterproof coatings, for tanning leather, and as an additive to fertilizer to regulate the rate of nitrogen release. Melamine has also been used as an illicit and harmful additive to foodstuffs to increase the apparent amount of protein present based upon assays for nitrogen.
  • noun A plastic made from melamine resin.

from The Century Dictionary.

  • noun A colorless compound, formed, together with melam, by heating ammonium cyanate. It crystallizes in monoclinic prisms. Also called cyanuramide, triguanide, and triurethriamidin.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A nitrogenous strongly basic chemical substance (C3H6N6), structurally 2,4,6-triamino-1,3,5-triazine, produced from several cyanogen compounds, and obtained as a white crystalline substance; -- formerly supposed to be produced by the decomposition of melam. Called also cyanuramide. It is used as one of the starting components (together with formaldehyde) in the preparation of melamine resins, including the commercially marketed Formica (TM). It is solid at room temperature, and sublimes at temperatures approaching 250° C, decomposing at 345° C. Density 1.573.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry a strong aromatic heterocyclic base, tri-amino-triazine, used, in combination with formaldehyde to manufacture melamine resins such as Formica

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a white crystalline organic base; used mainly in making melamine resins

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[German Melamin : blend of Melam, distillate of ammonium thiocyanate (mel-, arbitrary pref. + Am(monium), ammonium) and Amin, amine.]

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Examples

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  • Melamine resin dinnerware (plates, saucers, cups, bowls) was quite popular in the 1960s...the oxymoron "pretty ugly" describes the dinnerware well.

    February 1, 2008