petitio principii Hear it!

petitio principii Definition

pe·ti·tio· prin·ci·pii (pi tis̸h′ē ō′ prin sip′ē ī′)

noun

Logic the fallacy of assuming in the premise of an argument the conclusion which is to be proved

Etymology: L, a begging of the question

petitio principii Usage Examples

Converse of object

  • involve: To assert that He has never in fact spoken thus involves a transparent petitio principii.