turquoise
[ tur-koiz, -kwoiz ]
/ ˈtɜr kɔɪz, -kwɔɪz /
noun
Also tur·quois.
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.
Words nearby turquoise
turpentine tree,
turpeth,
turpin,
turpitude,
turps,
turquoise,
turquoise green,
turret,
turret lathe,
turreted,
turrical
Example sentences from the Web for turquoise
British Dictionary definitions for turquoise
turquoise
/ (ˈtɜːkwɔɪz, -kwɑːz) /
noun
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: CuAl 6 (PO 4) 4 (OH) 8 .4H 2 O
- the colour of turquoise
- (as adjective)a turquoise dress
Word Origin for turquoise
C14: from Old French
turqueise Turkish (stone)
Scientific definitions for turquoise
turquoise
[ 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