Trends ofcorundum
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corundum in British English
(kəˈrʌndəm)
noun
a white, grey, blue, green, red, yellow, or brown mineral, found in metamorphosed shales and limestones, in veins, and in some igneous rocks. It is used as an abrasive and as gemstone; the red variety is ruby, the blue is sapphire. Composition: aluminium oxide. Formula: Al2O3. Crystal structure: hexagonal (rhombohedral)
Word origin
C18: from Tamil kuruntam; related to Sanskrit kuruvinda rubycorundum in American English
(kəˈrʌndəm)
noun
a very hard mineral, aluminum oxide, Al2O3: a dark, coarse variety (emery) is used for grinding and polishing; clear, transparent varieties (ruby, sapphire) are used as gems
see also Mohs scale Word origin
Tamil kurundam < Sans kuruvinda, rubyImage ofcorundum
© Gozzoli, shutterstock
Examples of 'corundum' in a sentencecorundum
Word lists withcorundum
gem, mineral- dissunder
- dissyllabic
- dissyllabify
- dissyllabism
- dissyllable
- dissymmetric
- dissymmetrical
- dissymmetrically
- dissymmetries
- dissymmetry
- dist
- distaff
- distaffer
- distaff side
- distain
- distal
- distally
- distance
- distance learning
- distanceless
- distance modulus
- distance race
- distance runner
- distance teaching
- distance yourself from something or someone