posnanian

I. \(ˈ)päz|nānēən, -nyən\ adjective

Usage: usually capitalized

Etymology: Poznań, province and city in Poland + English -ian

: of or relating to the Polish province of Poznan or the city of Posen

II. noun (-s)

Usage: capitalized

1. : a native or resident of Poznan or Posen

2. : the dialect of Poznan upon which standard Polish is based