Witt ‧ gen ‧ stein, Lud ‧ wig /ˈvɪtɡənʃtaɪn, ˈlʊdvɪɡ $ -wɪɡ/ BrE AmE
(1889–1951) an Austrian ↑ philosopher , who studied and taught at Cambridge in the UK. His interests included the relationship between language and the physical world, and his best known works are Tractatus Logico-Philosophicus and Philosophical Investigations .