英文字典中文字典51ZiDian.com

The Collaborative International Dictionary of English v.0.48 (gcide)

Chrome \Chrome\ (kr[=o]m), v. t. [imp. & p. p. {Chromed}
(kr[=o]md); p. pr. & vb. n. {Chroming}.] [From {Chrome}, n.]
To treat with a solution of potassium bichromate, as in
dyeing.
[Webster 1913 Suppl.]


Chrome \Chrome\, n.
Same as {Chromium}.
[1913 Webster]

{Chrome alum} (Chem.), a dark violet substance,
{(SO4)3Cr2.K2SO4.24H2O}, analogous to, and crystallizing
like, common alum. It is regarded as a double sulphate of
chromium and potassium.

{Chrome green}
(a) The green oxide of chromium, {Cr2O3}, used in enamel
painting, and glass staining.
(b) A pigment made by mixing chrome yellow with Prussian
blue.

{Chrome red}, a beautiful red pigment originally prepared
from the basic chromate of lead, but now made from red
oxide of lead.

{Chrome yellow}, a brilliant yellow pigment, {PbCrO4}, used
by painters.
[1913 Webster]


Chromium \Chro"mi*um\, n. [NL., fr. Gr. ? color.] (Chem.)
A comparatively rare element occurring most abundantly in the
mineral chromite. Atomic weight 52.5. Symbol Cr. When
isolated it is a hard, brittle, grayish white metal, fusible
with difficulty. Its chief commercial importance is for its
compounds, as potassium chromate, lead chromate, etc., which
are brilliantly colored and are used dyeing and calico
printing. Called also {chrome}.
[1913 Webster]