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TOEFL BNC: 17116 COCA: 11819

helium

Related topics: Chemistry
he·li·um /ˈhiːliəm/ noun [uncountableU]  
HCa gas that is lighter than air and is used to make balloons float. It is a chemical element: symbol He 氦〔一种化学元素,符号为He
Examples from the Corpus
Origin helium
(1800-1900) Greek helios sun; because it was discovered in the sun's spectrum
he·li·um noun
Chinese
Syllable
Corpus
TOEFL BNC: 17116 COCA: 11819
TOEFL BNC: 17116 COCA: 11819
TOEFL BNC: 17116 COCA: 11819
helium
Gases: acetylene, ammonia, argon...
Chemical elements: actinium, alkali metal, americium...

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