petitio principii

pe·ti·ti·o prin·ci·pi·i  (p-tsh- prn-sp-, --)

n. Logic

The fallacy of assuming in the premise of an argument that which one wishes to prove in the conclusion; a begging of the question.

---

[Medieval Latin petti prncipi : Latin petti, request + Latin prncipi, genitive of prncipium, beginning.]

---

petitio principii [pɪˈtɪʃɪˌəʊ prɪnˈkɪpɪˌaɪ]

n

(Philosophy / Logic) Logic a form of fallacious reasoning in which the conclusion has been assumed in the premises; begging the question Sometimes shortened to petitio

[Latin, translation of Greek to en arkhei aiteisthai an assumption at the beginning]

Thesaurus

Noun

1.

petitio principii - the logical fallacy of assuming the conclusion in the premises; begging the question petitio logical fallacy - a fallacy in logical argumentation