Alundum definitions

Alundum

1) Alumina 2) Aluminium oxide 3) Aluminum oxide
Found on https://www.crosswordclues.com/clue/alundum

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Alundum

Alundum is a form of alumina (aluminium oxide) used in the manufacture of thermionic valves for insulating the cathode heater from the tubular cathode.
Found on http://www.probertencyclopaedia.com/browse/GA.HTM

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Alundum

Fused alumina
Found on http://www.translationdirectory.com/glossaries/glossary071.htm

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alundum

[n] - a substance made of fused alumina
Found on http://www.webdictionary.co.uk/definition.php?query=alundum

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alundum

noun a substance made of fused alumina
Found on https://www.encyclo.co.uk/local/20974

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Alundum

a brand name for a substance consisting of fused alumina, used chiefly as an abrasive and as a refractory.
Found on https://www.infoplease.com/dictionary/alundum

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