Kata bahasa Indonesia
English word
TANDA HUBUNG
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun has 1 sense
- corundum(n = noun.substance) corundom - very hard mineral used as an abrasive;
CIDE DICTIONARY
, n. Array
The mineral alumina (Al2O3 ), as found native in a crystalline state. Transparent varieties are used as gemstones, including sapphire , which is the fine blue variety; the oriental ruby , or red sapphire; the oriental amethyst , or purple sapphire; and adamantine spar , the hair-brown variety. It is the hardest substance found native, next to the diamond. [1913 Webster]
OXFORD DICTIONARY
, n. Mineral. extremely hard crystallized alumina, used esp. as an abrasive, and varieties of which, e.g. ruby and sapphire, are used for gemstones.
Etymology
Tamil kurundam f. Skr. kuruvinda ruby