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helium
1 ENTRIES FOUND:
helium
(noun)
helium
/
ˈ
hiːlijəm/
noun
helium
/
ˈ
hiːlijəm/
noun
Britannica Dictionary definition of HELIUM
[
noncount
]
:
a chemical element that is a colorless gas, that is lighter than air, and that is often used to fill balloons
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sectional
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a type of long seat (called a sofa) that has three or more separate sections (
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