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emery

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Corundum \Co*run"dum\ (k[-o]*r[u^]n"d[u^]m), noun; 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.

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Emery \Em"er*y\, noun [F. ['e]meri, earlier ['e]meril, It. smeriglio, fr. Gr. ?, ?, ?, cf. ? to wipe; perh. akin to E. smear. Cf. {Emeril}.] (Min.) Corundum in the form of grains or powder, used in the arts for grinding and polishing hard substances. Native emery is mixed with more or less magnetic iron. See the Note under {Corundum}.

{Emery board}, cardboard pulp mixed with emery and molded into convenient.

{Emery cloth} or {Emery paper}, cloth or paper on which the powder of emery is spread and glued for scouring and polishing.

{Emery wheel}, a wheel containing emery, or having a surface of emery. In machine shops, it is sometimes called a {buff wheel}, and by the manufacturers of cutlery, a {glazer}.

From WordNet (r) 3.0 (2006) [wn]:

emery

noun

1: a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)


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Tuesday, March 3, 2015 12:40:51 PM Coordinated Universal Time (UTC)

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