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Definition of helium

helium

/ˈhiːliəm/
he · li · um
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helium Lexical Profile

helium Game Scores & Validity

• noun

1

A colorless, odorless, tasteless, and non-toxic inert gas that is the lightest of the noble gases and the second most abundant element in the observable universe (atomic number 2).

Example

"The balloons for the birthday party were filled with helium so they would float to the ceiling."

• Rhymes for helium

• Nearby Words

heliopsis
heliotrope
heliotropium
helium
hellbender
hellebore
helleborus

Word Origin & Etymology

Coined in 1868 by Norman Lockyer and Edward Frankland from the Greek 'hēlios' (sun), because the element was first discovered as an unknown yellow spectral line signature in sunlight during a solar eclipse.

Cite this Entry

Wordmom. (2026). Definition of Helium. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/helium
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