9 Grammatical Pitfalls


[awr, ohr] /ɔr, oʊr/
a metal-bearing mineral or rock, or a native metal, that can be mined at a profit.
a mineral or natural product serving as a source of some nonmetallic substance, as sulfur.
Origin of ore
before 900; conflation of Middle English ore, Old English ōra ore, unreduced metal; and Middle English or(e) ore, metal, Old English ār brass, cognate with Old Saxon, Old High German ēr, Old Norse eir, Gothic aiz; compare Latin aes bronze, coin, money
Can be confused
oar, o'er, or, ore.


[œ-ruh] /ˈœ rə/
noun, plural öre.
a bronze coin of Norway, the 100th part of a krone.
a zinc or bronze coin of Denmark, the 100th part of a krone.
a bronze coin of Sweden, the 100th part of a krona.
a fractional currency of the Faeroe Islands, the 100th part of a krona.
1600-10;Latin aureus a gold coin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for ores
  • And newer deposits tend to mix gold with other ores, so diversification will continue.
  • Furthermore, cyanide is not used in aluminum processing, and of course being short-lived and volatile is not present in any ores.
  • These are well known processes but currently they are concentrated near where the ores are originally mined.
  • In this decade, high-grade uranium ores will deplete significantly, leaving the industry to resort to low-grade ores.
  • As uranium ores will run out in seventy years time, there is little time left to consider building new plant.
  • Acid leaching of ores in ground ore bodies is worse.
  • There is so much of these elements in coal that cinders and coal smoke are actually valuable ores.
  • There is so much of these elements in coal that coal cinders and fly ash are actually valuable ores.
  • We understand too little of the process of development of neuroses, to create anything similar to the study of ores.
  • For decades geologists had noticed suspiciously marine-looking fossils embedded in those ores.
British Dictionary definitions for ores


any naturally occurring mineral or aggregate of minerals from which economically important constituents, esp metals, can be extracted
Word Origin
Old English ār, ōra; related to Gothic aiz, Latin aes, Dutch oer


noun (pl) öre
a Scandinavian monetary unit worth one hundredth of a Swedish krona and (øre) one hundredth of a Danish and Norwegian krone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ores



12c., merger of Old English ora "ore, unworked metal" (related to ear "earth," cognate with Low German ur "iron-containing ore," Dutch oer, Old Norse aurr "gravel"); and Old English ar "brass, copper, bronze," from Proto-Germanic *ajiz- (cf. Old Norse eir "brass, copper," German ehern "brazen," Gothic aiz "bronze"), from PIE *aus- "gold" (see aureate). The two words were not fully assimilated till 17c.; what emerged has the form of ar but the meaning of ora.

Online Etymology Dictionary, © 2010 Douglas Harper
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ores in Science
A naturally occurring mineral or rock from which a valuable or useful substance, especially a metal, can be extracted at a reasonable cost.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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ores in Culture

ore definition

In geology, a mineral that contains a commercially useful material, such as gold or uranium.

Note: Ore deposits are generally mined, and the ore is processed to recover the material.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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