from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A blue to blue-green mineral of aluminum and copper, mainly CuAl6(PO4)4(OH)8·4H2O, prized as a gemstone in its polished blue form.
- n. A light to brilliant bluish green.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sky-blue, greenish-blue, or greenish-gray semi-precious gemstone.
- n. A pale greenish-blue colour, like that of the gemstone.
- adj. Made of turquoise (the gemstone).
- adj. Having a pale greenish-blue colour.
from the GNU version of the Collaborative International Dictionary of English
- n. A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface.
- adj. Having a fine light blue color, like that of choice mineral turquoise.
from The Century Dictionary and Cyclopedia
- n. An opaque blue or greenish-blue precious stone, consisting essentially of a phosphate of aluminium containing a little copper and iron.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a shade of blue tinged with green
- n. a blue to grey green mineral consisting of copper aluminum phosphate
Middle English turkeis and French turquoise, both from Old French (pierre) turqueise, Turkish (stone), turquoise, feminine of turqueis, Turkish, from Turc, Turk; see Turk.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French turquoise, from Old French (pierre) turqueise ("Turkish (stone)"). The stone was originally brought to Europe from Turkestan. (Wiktionary)