helium

noun he·li·um \ ˈhē-lē-əm , ˈhēl-yəm \

Definition of helium

:a light colorless inert gaseous element found especially in natural gases and used chiefly for inflating airships and balloons, in lamps, in cryogenic research, and as a component of inert atmospheres (as in welding) — see Chemical Elements Table

Recent Examples of helium from the Web

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Origin and Etymology of helium

New Latin, from Greek hēlios


HELIUM Defined for English Language Learners

helium

noun

Definition of helium for English Language Learners

  • : a chemical element that is a colorless gas, that is lighter than air, and that is often used to fill balloons


HELIUM Defined for Kids

helium

noun he·li·um \ ˈhē-lē-əm \

Definition of helium for Students

:a very light gaseous chemical element that is found in various natural gases, will not burn, and is used in balloons

Medical Dictionary

helium

noun he·li·um \ ˈhē-lē-əm \

medical Definition of helium

:a light colorless nonflammable gaseous element found especially in natural gases and used chiefly for inflating airships and balloons, for filling incandescent lamps, and for cryogenic research symbol He — see Chemical Elements Table


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