Pyroceram[pī′rō sə ram′]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a heavy, glasslike, ceramic material highly resistant to heat and breakage: used for cooking utensils, rocket nose cones, etc.
Origin: pyro- plush ceram(ic)
Used by arrangement with John Wiley & Sons, Inc.