CORUNDUMS

Noun

corundums

plural of corundum

Source: Wiktionary


CORUNDUM

Co*run"dum (k-rn"dm), n.; pl. Corundums (-d. [Also corindon.] Etym: [From Hind. kurand corundum stone.] (Min.)

Definition: The earth alumina, as found native in a crystalline state, 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.

Note: The name corundum is sometimes restricted to the non- transparent or coarser kinds. Emery is a dark-colored granular variety, usually admixed with magnetic iron ore.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

18 March 2025

ODONTOGLOSSUM

(noun) any of numerous and diverse orchids of the genus Odontoglossum having racemes of few to many showy usually large flowers in many colors


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