Helium

/ˈhiliəm/

Meaning & Definition

noun

A chemical element (He) with atomic number 2; a colorless, tasteless, odorless, inert gas that is the second lightest and second most abundant element in the observable universe, often used in balloons and as a coolant.

The party was filled with colorful balloons, all floating thanks to helium.

A non-renewable resource that is used in various applications, including MRIs and scientific research.

Helium is essential for operating MRI machines in hospitals.

A gas that is lighter than air and can cause voices to sound high-pitched when inhaled.

After inhaling helium from the balloon, her voice sounded comically squeaky.

A crucial component in the fusion process in stars, particularly in the sun.

Helium is produced in massive quantities through nuclear fusion in the sun's core.

An element used in scientific applications such as cryogenics and in the production of certain semiconductors.

Researchers use helium for cooling superconductors in their experiments.

Etymology

The word helium is derived from the Greek 'helios', meaning 'sun'.

Common Phrases and Expressions

helium balloon

A balloon filled with helium gas, causing it to float.

helium voice

A voice that sounds high-pitched due to inhaling helium.

Related Words

noble gas

A group of gaseous elements that are mostly inert and do not readily react with other elements.

balloon

A flexible bag filled with gas, often used for decoration or entertainment.

Slang Meanings

Helium high

After inhaling some helium, he was feeling helium high and couldn't stop laughing.

Floating on helium

That party was so fun, it felt like we were all floating on helium.