Corundum Co*run"dum (k[-o]*r[u^]n"d[u^]m), n.; pl. {Corundums} (k[-o]*r[u^]n"d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) 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 +PJC]

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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


Look at other dictionaries:

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  • Sapphire — Sap phire (? or ?; 277), n. [OE. saphir, F. saphir, L. sapphirus, Gr. ?, of Oriental origin; cf. Heb. sapp[=i]r.] 1. (Min.) Native alumina or aluminium sesquioxide, {Al2O3}; corundum; esp., the blue transparent variety of corundum, highly prized… …   The Collaborative International Dictionary of English

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  • sapphire — late 13c., from O.Fr. saphir (12c.), from L. sapphirus (Cf. Sp. zafir, It. zaffiro), from Gk. sappheiros blue stone (the gem meant apparently was not the one that now has the name, but perhaps rather lapis lazuli, the modern sapphire perhaps… …   Etymology dictionary

  • Sapphire — Sap phire, a. Of or resembling sapphire; sapphirine; blue. The sapphire blaze. Gray. [1913 Webster] …   The Collaborative International Dictionary of English

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  • sapphire — ► NOUN 1) a transparent blue precious stone which is a form of corundum. 2) a bright blue colour. ORIGIN Greek sappheiros, probably denoting lapis lazuli …   English terms dictionary

  • sapphire — [saf′īr] n. [ME < OFr saphir < L sapphirus < Gr sappheiros < Heb sapir < Sans śanipriya, lit., dear to Saturn < Śaniḥ, Saturn (the planet) + priya, beloved < IE * prī , var. of base * prēi , to love > FRIEND] 1. a clear,… …   English World dictionary

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  • sapphire — /saf uyeur/, n. 1. any gem variety of corundum other than the ruby, esp. one of the blue varieties. 2. a gem of this kind. 3. the color of this gem, a deep blue. adj. 4. resembling sapphire; deep blue: a sapphire sky. [1225 75; < L sapphirus < Gk …   Universalium

  • Sapphire — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Sapphire », sur le Wiktionnaire (dictionnaire universel) Sapphire est Le terme anglais pour la pierre… …   Wikipédia en Français

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