argon 音标拼音: ['ɑrg
, ɑn]
n . 氩
氩
argon n 1 :
a colorless and odorless inert gas ;
one of the six inert gases ;
comprises approximately 1 %
of the earth '
s atmosphere [
synonym : {
argon }, {
Ar }, {
atomic number 18 }]
Noble \
No "
ble \,
a . [
Compar . {
Nobler };
superl . {
Noblest }.] [
F .
noble ,
fr .
L .
nobilis that can be or is known ,
well known ,
famous ,
highborn ,
noble ,
fr .
noscere to know .
See {
know }.]
1 .
Possessing eminence ,
elevation ,
dignity ,
etc .;
above whatever is low ,
mean ,
degrading ,
or dishonorable ;
magnanimous ;
as ,
a noble nature or action ;
a noble heart .
[
1913 Webster ]
Statues ,
with winding ivy crowned ,
belong To nobler poets for a nobler song . --
Dryden .
[
1913 Webster ]
2 .
Grand ;
stately ;
magnificent ;
splendid ;
as ,
a noble edifice .
[
1913 Webster ]
3 .
Of exalted rank ;
of or pertaining to the nobility ;
distinguished from the masses by birth ,
station ,
or title ;
highborn ;
as ,
noble blood ;
a noble personage .
[
1913 Webster ]
Note :
Noble is used in the formation of self -
explaining compounds ;
as ,
noble -
born ,
noble -
hearted ,
noble -
minded .
[
1913 Webster ]
{
Noble gas } (
Chem .),
a gaseous element belonging to group VIII of the periodic table of elements ,
not combining with other elements under normal reaction conditions ;
specifically , {
helium }, {
neon }, {
argon }, {
krypton },
{
xenon },
or {
radon };
also called {
inert gas }.
{
Noble metals } (
Chem .),
silver ,
gold ,
and platinum ; --
so called from their resistance to oxidation by air and to dissolution by acids .
Copper ,
mercury ,
aluminium ,
palladium ,
rhodium ,
iridium ,
and osmium are sometimes included .
[
1913 Webster ]
Syn :
Honorable ;
worthy ;
dignified ;
elevated ;
exalted ;
superior ;
sublime ;
great ;
eminent ;
illustrious ;
renowned ;
stately ;
splendid ;
magnificent ;
grand ;
magnanimous ;
generous ;
liberal ;
free .
[
1913 Webster ]
Argon \
Ar "
gon \,
n . [
NL .,
fr .
Gr . ?,
neut .
of ?
inactive ; ?
priv .
?
work .] (
Chem .)
A colorless ,
odorless gas occurring in the air (
of which it constitutes 0 .
93 per cent by volume ),
in volcanic gases ,
etc .; --
so named on account of its inertness by Rayleigh and Ramsay ,
who prepared and examined it in 1894 -
95 .
Symbol ,
A ;
at .
wt .,
39 .
9 .
Argon is condensible to a colorless liquid boiling at -
186 .
1 [
deg ]
C .
and to a solid melting at -
189 .
6 [
deg ]
C .
It has a characteristic spectrum .
No compounds of it are known ,
but there is physical evidence that its molecule is monatomic .
Weight of one liter at 0 [
deg ]
C .
and 760 mm .,
1 .
7828 g .
[
Webster 1913 Suppl .]
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