The story
- Proto-Indo-European*h₁rewdʰ-
- Proto-Indo-European*h₁rudʰrós
- Proto-Hellenic*erutʰrós
- Ancient Greekἐρῠθρός (erŭthrós)
- Englisherythro-
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*gleyH-
- Proto-Indo-European*glóh₁ytn̥
- Proto-Italic*gloiten
- Latinglūten
- Latinglūtinō
- Latinagglūtinō
- Latinagglūtinātu
- Englishagglutinate
- Englishagglutinin
- English todayerythroagglutinin
From erythro- + agglutinin.
Etymology from Wiktionary, CC BY-SA 4.0.