Axioms, Vol. 5, Pages 21: Is Kazimierz Ajdukiewicz’s Concept of a Real Definition Still Important?

The concept of a real definition worked out by Kazimierz Ajdukiewicz is still important in the theory of definition and can be developed by applying Hilary Putnam's theory of reference of natural kind terms and Karl Popper's fallibilism. On the one hand, the definiendum of a real definition refers to a natural kind of things and, on the other hand, the definiens of such a definition expresses actual, empirical, fallible knowledge which can be revised and changed.

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