ganister

[gan-uh-ster]
noun
  1. a highly refractory, siliceous rock used to line furnaces.
  2. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ganister

ganister

gannister

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

Word Origin for ganister

C19: of unknown origin
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