| NOUN | substance | atomic number 36, krypton, Kr | a colorless element that is one of the six inert gasses |
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| Meaning | A colorless element that is one of the six inert gasses; occurs in trace amounts in air. | |
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| Synonyms | krypton, Kr | |
| 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 | criptón, kriptón, Kr, número atómico 36 | |
| Catalan | criptó, Kr | |
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