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)
<noun.substance> freq. cnt.: 15 freq. cnt.: 15
<noun.substance> freq. cnt.: 15 freq. cnt.: 15
| He |
|
| atomic number 2 |
|
| helium |
|
semantic pointers
hypernym