Where does “Alleghenian” come from?

Alleghenian (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.

Alleghenian (English): Relating to the Allegheny Mountains

Definitions

  1. Relating to the Allegheny Mountains

Ancestry of “Alleghenian”, step by step

Alleghenian 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 Allegheny

StepLanguageWordMeaning
1EnglishAlleghenyThe Allegheny River in Pennsylvania
2UnamiAlikehaneThe
3Persian-hane—
4Persianـخانه—
Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-West Germanic ain →