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[tur-koiz, -kwoiz] /ˈtɜr kɔɪz, -kwɔɪz/
Also, turquois. an opaque mineral, a basic hydrous copper aluminum phosphate often containing a small amount of iron, sky-blue or greenish-blue in color, cut cabochon as a gem.
Compare bone turquoise.
Also called turquoise blue. a greenish blue or bluish green.
Origin of turquoise
1350-1400; < French: Turkish (stone), equivalent to Turc Turk + -oise, feminine of -ois -ese; replacing Middle English turkeis < Middle French Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for turquoise
Contemporary Examples
Historical Examples
  • When morning came the sky was a turquoise and the wind a gale.

    Bride of the Mistletoe James Lane Allen
  • And by some magic of his own, he drew Dick out to tell the story of his turquoise mining.

    The Forbidden Trail Honor Willsie
  • We have Dick's ranch and the turquoise mine and Ernest's and your plant.

    The Forbidden Trail Honor Willsie
  • And the maiden answered, 'It is because my jewel of turquoise has fallen into the water.'

  • Her eyes were bluer even than her turquoise brooch or the gentians in her hat.

    Mr. Grex of Monte Carlo E. Phillips Oppenheim
British Dictionary definitions for turquoise


/ˈtɜːkwɔɪz; -kwɑːz/
a greenish-blue fine-grained secondary mineral consisting of hydrated copper aluminium phosphate. It occurs in igneous rocks rich in aluminium and is used as a gemstone. Formula: CuAl6(PO4)4(OH)8.4H2O
  1. the colour of turquoise
  2. (as adjective): a turquoise dress
Word Origin
C14: from Old French turqueise Turkish (stone)
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 turquoise

precious stone, 1560s, replacement from Middle French of Middle English turkeis, turtogis (late 14c.), from Old French fem. adjective turqueise "Turkish," in pierre turqueise "Turkish stone," so called because it was first brought to Europe from Turkestan or some other Turkish dominion (Sinai peninsula, according to one theory). Cognate with Spanish turquesa, Medieval Latin (lapis) turchesius, Middle Dutch turcoys, German türkis, Swedish turkos. As a color name, attested from 1853.

Online Etymology Dictionary, © 2010 Douglas Harper
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turquoise in Science
  (tûr'kwoiz', -koiz')   
A blue to bluish-green or yellowish-green triclinic mineral that occurs in reniform (kidney-shaped) masses with surfaces shaped like a bunch of grapes, especially in aluminum-rich igneous rocks such as trachyte. In its polished blue form it is prized as a gem. Chemical formula: CuAl6(PO4)4(OH)8·5H2O
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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