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CH2Br2
(gcide) | Methylene \Meth"yl*ene\, n. [F. m['e]thyl[`e]ne, from Gr. ? wine
+ ? wood; -- a word coined to correspond to the name wood
spirit.] (Chem.)
A divalent hydrocarbon radical, -CH2-, not known in the
free state, but regarded as an essential residue and
component of certain derivatives of methane; as, methylene
bromide, CH2Br2; -- formerly called also methene.
[1913 Webster]
Methylene blue (Chem.), an artificial dyestuff consisting
of a complex sulphur derivative of diphenyl amine; --
called also pure blue.
[1913 Webster] |
Cr2O3
(gcide) | 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] |
Er2O3
(gcide) | Erbium \Er"bi*um\, n. [NL. from Ytterby, in Sweden, where
gadolinite is found. Cf. Terbium, Yttrium, Ytterbium.]
(Chem.)
A rare earth element of the lanthanide series associated with
several other rare elements in the mineral gadolinite from
Ytterby in Sweden. Symbol Er. It has atomic number 68 and an
atomic weight of 167.26. The pure element is metallic with a
bright, silvery luster. It is relatively stable in air, not
oxidizing as quickly as some other rare earths. Its salts are
rose-colored and give characteristic spectra, and the pink
oxide has been added as a colorant in glass and porcelain
enamel glazes. Its sesquioxide Er2O3 is called erbia.
--HCP61
[1913 Webster +PJC] |
SO43Cr2K2SO424H2O
(gcide) | 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] |
Zr2SiO4
(gcide) | Zircon \Zir"con\, n. [F., the same word as jargon. See Jargon
a variety of zircon.]
1. (Min.) A mineral consisting predominantly of zirconium
silicate (Zr2SiO4) occurring in tetragonal crystals,
usually of a brown or gray color. It consists of silica
and zirconia. A red variety, used as a gem, is called
hyacinth. Colorless, pale-yellow or smoky-brown
varieties from Ceylon are called jargon.
[1913 Webster +PJC]
2. an imitation gemstone made of cubic zirconia.
[PJC]
Zircon syenite, a coarse-grained syenite containing zircon
crystals and often also elaeolite. It is largely developed
in Southern Norway.
[1913 Webster] |
r-2
(wn) | R-2
n 1: street names for flunitrazepan [syn: R-2, {Mexican
valium}, rophy, rope, roofy, roach, {forget me
drug}, circle] |
gddr2
(vera) | GDDR2
Graphics Double Data Rate 2 (SDRAM, IC, Samsung)
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ur2
(vera) | UR2
??? (DTAG, T-DSL), "U-R2"
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