Petitio-principii meaning

pə-tĭshē-ō prĭn-sĭpē-ē, -ē-ī
The fallacy of assuming in the premise of an argument that which one wishes to prove in the conclusion; a begging of the question.
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The fallacy of assuming in the premise of an argument the conclusion which is to be proved.
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(philosophy, logic, uncountable) The logical fallacy of begging the question.
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(philosophy, logic, countable) A particular argument which commits the fallacy of begging the question; a circular argument.
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Origin of petitio-principii

  • Medieval Latin petītiō prīncipiī Latin petītiō request Latin prīncipiī genitive of prīncipium beginning

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin petitio principii (literally “an assumption from the beginning"), calque of Ancient Greek τὸ ἐν ἀρχῇ αἰτεῖσθαι (to en archÄ“ aetÄ«sthae, “to assume from the beginning").

    From Wiktionary