a highly refractory, siliceous rock used to line furnaces.
a synthetic product similar to this rock, made by mixing ground quartz with a bonding material.

Origin of ganister

First recorded in 1805–15; origin uncertain Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ganister

Historical Examples of ganister

British Dictionary definitions for ganister




a highly refractory siliceous sedimentary rock occurring beneath coal seams: used for lining furnaces
a similar material synthesized from ground quartz and fireclay

Word Origin for ganister

C19: of unknown origin
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