Where does “San Diegan” come from?

San Diegan (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.

San Diegan (English): Someone from San Diego

Definitions

  1. Someone from San Diego

Ancestry of “San Diegan”, step by step

San Diegan 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 San Diego

StepLanguageWordMeaning
1EnglishSan DiegoAny of several other places also named after Saint Diego
2SpanishSan DiegoSaint Didacus
Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-West Germanic ain →