Where does “Eretrian” come from?

Eretrian (English) comes from English ān, from Middle English ān, from Old English ān, from Proto-West Germanic ain, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.

Eretrian (English): Of or relating to Eretria; A native or inhabitant...

Definitions

  1. Of or relating to Eretria; A native or inhabitant...

Ancestry of “Eretrian”, step by step

Eretrian traces back through two separate lines of ancestry.

via English ān

StepLanguageWordMeaning
1Englishān—
2Middle Englishāna, an indefinite article
3Old Englishānlonely; entirely alone, solitary, single; one
4Proto-West Germanicainone
5Proto-Germanicainazone; some
6Proto-Indo-Europeanóynosone; single

via English Eretria

StepLanguageWordMeaning
1EnglishEretriaA town in Euboea, Greece, facing the coast of Attica across the narrow South Euboean Gulf. It was an important polis in the 6th/5th century BC
2Ancient GreekἘρέτρῐᾰEretria
3Ancient Greekἐρέτηςrower
Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-West Germanic ain →