The story you may have heardThe extracted draft traced pizza to Aramaic pītā 'piece of bread' (compare Hebrew pat 'bread'). Wiktionary lists it only as one of many guesses. The Byzantine Greek pitta 'cake' it would have to pass through is first recorded in 1107, a century after the Latin pizze of Gaeta. Other guesses are Latin pinsere 'to pound' and Lombardic bizzo 'bite'. Etymonline, Wiktionary and the Italian dictionaries all call the origin uncertain, and no source shows an Aramaic step.