Petrasek, Petrášek, or Petrásek are Slavic surnames. They originated from the diminutive for the given name or surname Petras/Petráš based on the given name Peter. Petrasek is a Germanized form of the Czech and Slovak surnames Petrášek/Petrásek. A diminutive may be used as a patronymic in these languages.Petrasek

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cs:Petrášek