Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “helium”

See all translations

helium

noun [U] uk   /ˈhiː.li.əm/ ( symbol He) us  
a chemical element that is a gas lighter than air, that will not burn and is used in balloons, airships, and some types of lights
Translations of “helium”
in Korean 헬륨…
in Arabic غاز الهيليوم…
in French hélium…
in Turkish helyum gazı…
in Italian elio…
in Chinese (Traditional) 氦…
in Russian гелий…
in Polish hel…
in Spanish helio…
in Portuguese hélio…
in German das Helium…
in Catalan heli…
in Japanese ヘリウム(空気よりも軽い不燃性ガス)…
in Chinese (Simplified) 氦…
(Definition of helium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of helium?
Add Cambridge dictionaries to your browser to your website

Definitions of “helium” in other dictionaries

Word of the Day

illusion

an idea or belief that is not true

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More