[pi-tish-ee-oh prin-sip-ee-ahy; Latin pe-tee-ti-oh pring-kip-i-ee]
- a fallacy in reasoning resulting from the assumption of that which in the beginning was set forth to be proved; begging the question.
Origin of petitio principii
1525–35; < Medieval Latin petītiō prīncipiī, translation of Greek tò en archêi aiteîsthai the assumption at the outset
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- logic a form of fallacious reasoning in which the conclusion has been assumed in the premises; begging the questionSometimes shortened to: petitio
C16: Latin, translation of Greek to en arkhei aiteisthai an assumption at the beginning