Inside the Universes

'helium'

[helium.n.01] as in: 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)

Origins

					helium (English)
└── helium (Latin)
    └── ἥλιος (Ancient Greek (to 1453))