The story
- Proto-Indo-European*ser-
- Proto-Indo-European*sér-o-
- Proto-Italic*serom
- Latinserum
- Englishserum
- Englishsero-
- Latinconvertō
- Old Frenchconvertir
- Middle Englishconverten
- Englishconvert
- English todayseroconvert
Etymology from Wiktionary, CC BY-SA 4.0.