Hypertext Webster Gateway: "turquoise"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Turquoise \Tur*quoise"\, Turquois \Tur*quois"\ (?; 277), n. [F.
turquoise; cf. Pr. & Sp. turquesa, It. turchese, turchina,
LL. turchesius, turchina; -- so called because first brought
from Turkey. See 1st {Turkey}.] (Min.)
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.
[Formerly written also {turcois}, and {turkois}.]
Note: Turquoise is susceptible of a high polish, and when of
a bright blue color is much esteemed as a gem. The
finest specimens come from Persia. It is also found in
New Mexico and Arizona, and is regarded as identical
with the chalchihuitl of the Mexicans.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Turquoise \Tur*quoise"\, a.
Having a fine light blue color, like that of choice mineral
turquoise.
From WordNet (r) 1.7 (wn)
turquoise
n 1: a blue to gray green mineral consisting of copper aluminum
phosphate; blue turquoise is valued as a gemstone
2: a shade of blue tinged with green [syn: {greenish blue}, {aqua},
{aquamarine}, {cobalt blue}, {peacock blue}]
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