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| Matching Terms: | | atomic number 1, atomic number 10, atomic number 100, atomic number 101, atomic number 102, atomic number 103, atomic number 104, atomic number 105, atomic number 106, atomic number 107, atomic number 11, atomic number 12, atomic number 13, atomic number 14, atomic number 15, atomic number 16, atomic number 17, atomic number 19
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 WordNet Dictionary |
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| | Definition: | | [n] a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere |
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| | Synonyms: | | Ar, argon |
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| | See Also: | | air, argonon, chemical element, element, inert gas, noble gas |
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