English
helion
From helium + -on.
A compound of helium + -on
Proto-Indo-European *sóh₂wl̥ ‘sun’
Proto-Hellenic *hāwélios ‘sun’
Ancient Greek ἥλιος ‘sun’
New Latin helium
English helium
Today it means
noun Any helium ion, the nucleus of any helium atom.
Language periods are conventional ranges, not dates for this word.
Etymograph / helion