The story
- Proto-Indo-European*per-
- Proto-Indo-European*preh₂-
- Proto-Hellenic*pərai
- Ancient Greekπᾰρᾰ́ (părắ)
- Ancient Greekπᾰρᾰ- (pără-)
- Englishpara-
- Englishphenylenediamine
- English todayparaphenylenediamine
From para- + phenylenediamine.
Etymology from Wiktionary, CC BY-SA 4.0.