noun
- A hard, fine-grained siliceous rock used in the manufacture of refractory bricks and furnace linings.
Usage: technical; chiefly British
Examples
- The foundry used gannister bricks to line the high-temperature furnace.
- Gannister is quarried in several regions and valued for its heat-resistant properties.
- The refractory material gannister can withstand extreme temperatures without degrading.
- Industrial kilns often rely on gannister to maintain structural integrity under intense heat.