| murexide | <chemistry> A crystalline nitrogenous substance having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly Synonym: ammonium purpurate. Origin: L. Murex the purple fish, purple. Source: Websters Dictionary (01 Mar 1998) |
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