Wolff

noun

1. Chris·ti·an von [kris-tee-ahn fuh n] /ˈkrɪs tiˌɑn fən/, Baron.Also Wolf.1679–1754, German philosopher and mathematician.
2. Kas·par Frie·drich [kahs-pahr free-drikh] /ˈkɑs pɑr ˈfri drɪx/, 1733–94, German anatomist and physiologist.