refractory material <p><span data-sheets-value="{" data-sheets-userformat="{">Material, usually nonmetallic and often ceramic, able to withstand very high temperatures and with a melting point above 1580 degrees Celsius.<br /></span></p> <p><span data-sheets-value="{" data-sheets-userformat="{">Source: AAT </span></p> <p><span data-sheets-value="{" data-sheets-userformat="{"><a class="in-cell-link" href="http://vocab.getty.edu/page/aat/300015367" target="_blank" rel="noopener">http://vocab.getty.edu/page/aat/300015367</a></span></p>