 helium |
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| 1. | [ noun ] (chemistry) a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas) | |
| Synonyms: | atomic_number_2 He | |
| Related terms: | chemical_element noble_gas | |
| Similar spelling: |
helm Hewlin Hellen |
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