Alundum

American  

[uh-luhn-duhm] / əˈlʌn dəm /

Trademark.

1. a brand name for a substance consisting of fused alumina, used chiefly as an abrasive and as a refractory.

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Alundum British  

/ əˈlʌndəm /

noun

1. a hard material composed of fused alumina, used as an abrasive and a refractory

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Example Sentences

Bauxite simply fused in the electric furnace makes a better abrasive than the natural emery or corundum, and it is sold for this purpose under the name of "aloxite," "alundum," "exolon," "lionite" or "coralox."

From Project Gutenberg

When the fused bauxite is worked up with a bonding material into crucibles or muffles and baked in a kiln it forms the alundum refractory ware.

From Project Gutenberg

Since alundum is porous and not attacked by acids it is used for filtering hot and corrosive liquids that would eat up filter-paper.

From Project Gutenberg

Porous crucibles of a material known as alundum may also be employed to advantage in special cases.

From Project Gutenberg