English
protium
Protium comes from Ancient Greek πρῶτος ‘first’, from πρό ‘before’, and ultimately from Proto-Hellenic *pro-atos.
- Proto-Hellenicc. 2200–1600 BCE*pro-atosreconstructed
- Ancient Greekc. 800–300 BCEπρό‘before’
- Ancient Greek, derivedc. 800–300 BCEπρῶτοςprôtos‘first’
- Englishtodayprotium
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Hellenicc. 2200–1600 BCE*pro-atosreconstructed
- Ancient Greekc. 800–300 BCEπρό‘before’
- Ancient Greek, derivedc. 800–300 BCEπρῶτοςprôtos‘first’
- Englishtodayprotium
Formed from proto + ium
Linked words
through Ancient Greek πρό ‘before’
Today it means
noun The lightest and most common isotope of hydrogen, having a single proton and no neutrons: 11H. It is the only stable nuclide with no neutrons.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Hellenic *pro-atos / protium