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
Every day we should hear at least one little song, read one
good poem, see one exquisite picture, and, if possible,
speak a few sensible words.