Example image of eyePlorer eyePlorer map for 'Definition': Meaning (linguistics) Phrase Word Etymology Lexical definition Charles Stevenson Persuasive definition Intensional definition Necessary and sufficient condition Set (mathematics) Genus–differentia definition Extension (semantics) Extensional definition Object (philosophy) Prime minister Ostensive definition Ludwig Wittgenstein Enumerative definition Classics Subset Free will Aristotle Posterior Analytics Analytic philosophy Bertrand Russell Essentialism Kripke semantics Modal logic Possible world Rigid designator Recursive definition Recursion Natural number Peano axioms Self-reference Circular definition English language Natural language Symbol grounding Scholasticism Being An Essay Concerning Human Understanding John Locke Logical atomism Philosophical Investigations John Stuart Mill Principle of individuation Definite description Theory of descriptions Saul Kripke