[hee -lee-uh m]

Definition #1 for "helium"

a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)


Definition #2 for "helium"

A colorless and inert gas, and the second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602.


© Anyterm LLC All rights reserved 2019. Terms of Service | Privacy Policy |