corundum

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corundum > pronunciation
Sounds	kerah'ndahm
Rhymes	abolitionism, absenteeism, absolutism, and 548 more rhymes in ahm...

corundum > noun, substance
Meaning	Very hard mineral used as an abrasive.
Synonyms	corundom
Substance of	emery
Broader	mineral
Narrower	alumina, aluminum oxide, aluminium oxide; ruby; sapphire