helium
Pronunciation
  • enPR: hē'lēəm, IPA: /ˈhiːli.əm/
Noun

helium

  1. (uncountable) The second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.
  2. (countable) A form or sample of the element.
Synonyms
  • E939 when used as a packaging gas
Related terms Translations


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