Associations to the word «Corundum»
Noun
Adjective
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Wiktionary
CORUNDUM, noun. (mineral) An extremely hard mineral, a form of aluminum oxide with the chemical formula Al2O3, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.
Dictionary definition
CORUNDUM, noun. Very hard mineral used as an abrasive.
Wise words
The chief difference between words and deeds is that words
are always intended for men for their approbation, but deeds
can be done only for God.