| NOUN | substance | Xe, xenon, atomic number 54 | a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts |
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| Meaning | A colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts. | |
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| Synonyms | xenon, atomic number 54 | |
| Broader | chemical element, element | Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
| noble gas, inert gas, argonon | Any of the chemically inert gaseous elements of the helium group in the periodic table | |
| Substance of | air | A mixture of gases (especially oxygen) required for breathing |
| Spanish | número atómico 54, Xe, xenon, xenón | |
| Catalan | número atòmic 54, Xe, xenó | |
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