co 音标拼音: [k'o]
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CO n 1 :
an odorless very poisonous gas that is a product of incomplete combustion of carbon [
synonym : {
carbon monoxide },
{
carbon monoxide gas }, {
CO }]
2 :
a hard ferromagnetic silver -
white bivalent or trivalent metallic element ;
a trace element in plant and animal nutrition [
synonym : {
cobalt }, {
Co }, {
atomic number 27 }]
3 :
one who refuses to serve in the armed forces on grounds of conscience [
synonym : {
conscientious objector }, {
CO }]
4 :
a state in west central United States in the Rocky Mountains [
synonym : {
Colorado }, {
Centennial State }, {
CO }]
Ketone \
Ke "
tone \ (
k [=
e ]"
t [=
o ]
n ),
n . [
Cf . {
Acetone }.] (
Chem .)
One of a large class of organic substances resembling the aldehydes ,
obtained by the distillation of certain salts of organic acids and consisting of carbonyl ({
CO })
united with two hydrocarbon radicals .
In general the ketones are colorless volatile liquids having a pungent ethereal odor .
[
1913 Webster ]
Note :
The ketones are named by adding the suffix -
one to the stems of the organic acids from which they are respectively derived ;
thus ,
acetic acid gives acetone ;
butyric acid ,
butyrone ,
etc .
[
1913 Webster ]
Acyl \
Ac "
yl \,
n . [
Acid -
yl .] (
Org .
Chem .)
An acid radical ,
as acetyl ,
malonyl ,
or benzoyl .
An acyl radical can be depicted as {
R -
CO -},
where {-
CO -}
is the carbonyl group ,
and R is the group that characterizes the acyl moiety .
[
Webster 1913 Suppl .
PJC ]
Carbonic \
Car *
bon "
ic \,
a . [
Cf .
F .
carbonique .
See {
Carbon }.]
(
Chem .)
Of ,
pertaining to ,
or obtained from ,
carbon ;
as ,
carbonic oxide .
[
1913 Webster ]
{
Carbonic acid } (
Chem .),
an acid {
HO .
CO .
OH },
not existing separately ,
which ,
combined with positive or basic atoms or radicals ,
forms carbonates .
In common language the term is very generally applied to a compound of carbon and oxygen , {
CO2 },
more correctly called {
carbon dioxide }.
It is a colorless ,
heavy ,
irrespirable gas ,
extinguishing flame ,
and when breathed destroys life .
It can be reduced to a liquid and solid form by intense pressure .
It is produced in the fermentation of liquors ,
and by the combustion and decomposition of organic substances ,
or other substances containing carbon .
It is formed in the explosion of fire damp in mines ,
and is hence called {
after damp };
it is also know as {
choke damp },
and {
mephitic air }.
Water will absorb its own volume of it ,
and more than this under pressure ,
and in this state becomes the common soda water of the shops ,
and the carbonated water of natural springs .
Combined with lime it constitutes limestone ,
or common marble and chalk .
Plants imbibe it for their nutrition and growth ,
the carbon being retained and the oxygen given out .
{
Carbonic oxide } (
Chem .),
a colorless gas , {
CO },
of a light odor ,
called more correctly {
carbon monoxide }.
It is almost the only definitely known compound in which carbon seems to be divalent .
It is a product of the incomplete combustion of carbon ,
and is an abundant constituent of water gas .
It is fatal to animal life ,
extinguishes combustion ,
and burns with a pale blue flame ,
forming carbon dioxide .
[
1913 Webster ]
Carbonyl \
Car "
bon *
yl \,
n . [
Carbon -
yl .] (
Chem .)
The radical ({=
CO }),
occuring ,
always combined ,
in many compounds ,
as the aldehydes ,
the ketones ,
urea ,
carbonyl chloride ,
etc .
[
1913 Webster ]
Note :
Though denoted by a formula identical with that of carbon monoxide ,
it is chemically distinct ,
as carbon seems to be divalent in carbon monoxide ,
but tetravalent in carbonyl compounds .
[
1913 Webster ]
{
Carbonyl chloride } (
Chem .),
a colorless gas , {
COCl2 },
of offensive odor ,
and easily condensable to liquid .
It is formed from chlorine and carbon monoxide ,
under the influence of light ,
and hence has been called {
phosgene },
or {
phosgene gas }; --
called also {
carbon oxychloride }.
It is used in chemical synthesis ,
and was also used as a poison gas in World War I .
[
1913 Webster PJC ]
Co \
Co \
n .
the chemical formula for {
cobalt },
a ferromagnetic metal of atomic number 27 .
Syn :
cobalt ,
atomic number 27 .
[
WordNet 1 .
5 ]
Co - \
Co -\ (
k [-
o ]-).
A form of the prefix com -,
signifying with ,
together ,
in conjunction ,
joint .
It is used before vowels and some consonants .
See {
Com -}.
[
1913 Webster ]
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Carbon monoxide - Wikipedia Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond It is the simplest carbon oxide In coordination complexes, the carbon monoxide ligand is called carbonyl It is a key ingredient in many processes in industrial chemistry [5]
Carbon Monoxide Fact Sheet | CPSC. gov What is carbon monoxide (CO) and how is it produced? Carbon monoxide (CO) is a deadly, colorless, odorless, poisonous gas It is produced by the incomplete burning of various fuels, including coal, wood, charcoal, oil, kerosene, propane, and natural gas
Carbon Monoxide (CO) Poisoning Fact Sheet Carbon monoxide (CO) is an odorless, colorless gas that kills without warning It claims the lives of hundreds of people every year and makes thousands more ill
Carbon monoxide (CO) poisoning: Symptoms, causes, and prevention Barbecues, gas cookers, and heaters can give off carbon monoxide (CO) With no smell or taste, it deprives a person's blood of oxygen, and it can kill
carbon monoxide - Encyclopedia Britannica carbon monoxide, (CO), a highly toxic, colorless, odorless, flammable gas produced industrially for use in the manufacture of numerous organic and inorganic chemical products
CO - What does CO stand for? The Free Dictionary Looking for online definition of CO or what CO stands for? CO is listed in the World's most authoritative dictionary of abbreviations and acronyms
CO Definition Meaning - Merriam-Webster What does the abbreviation CO stand for? Meaning: company How to use co in a sentence
CO. definition in American English | Collins English Dictionary Co is used as an abbreviation for company when it is part of the name of an organization
Basic Information about Carbon Monoxide (CO) Outdoor Air Pollution CO is a colorless, odorless gas that can be harmful when inhaled in large amounts CO is released when something is burned The greatest sources of CO to outdoor air are cars, trucks and other vehicles or machinery that burn fossil fuels
CO- | English meaning - Cambridge Dictionary CO- definition: 1 together; with: 2 abbreviation for company (= business): 3 written abbreviation for county… Learn more