The story
- Proto-Indo-European*bʰeh₂-
- Proto-Indo-European*bʰéh₂os
- Proto-Hellenic*pʰáwos
- Ancient Greekφᾰ́ος (phắos)
- Ancient Greekφῶς (phôs)
- Proto-Indo-European*bʰer-
- Proto-Indo-European*bʰéreti
- Proto-Hellenic*pʰérō
- Ancient Greekφέρω (phérō)
- Ancient Greekφωσφόρος (phōsphóros)
- Latinphōsphorus
- Englishphosphorus
- Proto-Indo-European*h₃ed-
- Proto-Indo-European*h₃édosder.?
- English todayphosphorous
From phosphorus + -ous.
Etymology from Wiktionary, CC BY-SA 4.0.