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)
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helium::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | atomic number 2, he |
| Type of | argonon, chemical element, element, inert gas, noble gas |
