an orange-red, crystalline, water-soluble, poisonous powder, K2Cr2O7, used chiefly in dyeing, photography, and as a laboratory reagent.
Origin of potassium dichromate
First recorded in 1880–85
Also called potassium bichromate.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for potassium bichromate
an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K 2 Cr 2 O 7
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012