helium JUST WRITTEN FOR YOU
/ˈhiːli.əm/ · he·li·um
noun
- The second lightest chemical element with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas. The party balloons were filled with helium, making them float in the air.
- A form or sample of the element. The scientist examined the sample of helium to determine its properties.
verb
- To fill something with helium, typically to make it float. The children helium-filled their balloons and released them into the sky.
Did you know? Helium is the lightest gas that can be liquefied, and it was first discovered on the sun before being found on Earth.