noun

helium

helium

Balloons are often filled with helium.

Balloons are often filled with helium.

Helium is the second lightest element.

Helium is the second lightest element.

((noun)) a chemical element Helium is a very light gas.

Synonyms: none. Related concepts: noble gas, element.

From Greek 'hēlios' meaning 'sun', as it was first detected in the sun's spectrum.

Think of a high-pitched voice from a helium balloon, rising up like the sun ('helios').

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