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A modern dictionary of Catholic terms, both common and obscure. Find accurate definitions of words and phrases.

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DEMONSTRATION, A PRIORI

Legitimate reasoning from evident premises. The argument therefore goes from something prior in nature or in time to the being in the conclusion, e.g., from cause to effect, from the nature of something to any of its properties.

All items in this dictionary are from Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.

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