Definition of Popper, Sir Karl Raimund in US English:

Popper, Sir Karl Raimund

proper noun

  • (1902–94), British philosopher; born in Austria. In The Logic of Scientific Discovery (1934) he argued that scientific hypotheses can never be finally confirmed as true, but are tested by attempts to falsify them. He also wrote The Open Society and Its Enemies (1945), a critique of all totalitarian systems.

Pronunciation

Popper, Sir Karl Raimund

/ˈpäpər/