Petitio Principii Definition
pə-tĭshē-ō prĭn-sĭpē-ē, -ē-ī
noun
The fallacy of assuming in the premise of an argument the conclusion which is to be proved.
Webster's New World
Synonyms:
- petitio
Origin of Petitio Principii
-
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
Medieval Latin petītiō prīncipiī Latin petītiō request Latin prīncipiī genitive of prīncipium beginning
From American Heritage Dictionary of the English Language, 5th Edition
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