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
It is better wither to be silent, or to say things of more
value than silence. Sooner throw a pearl at hazard than an
idle or useless word; and do not say a little in many words,
but a great deal in a few.