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Noun
argon
has 1 sense
argon
,
Ar
,
atomic number 18
- a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
--
1
is a kind of
chemical element
,
element
;
noble gas
,
inert gas
,
argonon
--
1
is a substance of
air
,
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