EUCLID'S DEFINITION OF MULTIPLICATION CORRECTLY TRANSLATED INTO ITALIAN BY NICCOLO FONTANA TARTAGLIA.
In 1543 Niccolò Fontana Tartaglia gave the following Italian translation of Euclid's definition of multiplication.
Quel numero se dice esser multiplicato per un'altro, il quale si e assunato tante volte, quante unita e in lo multiplicante.
"That number is said to be multiplied by another, which is (combined / summed / taken) as many times as there are units in the multiplier. "
Tartaglia was a mathematics teacher in Verona, and Venice. and Professor of Euclid in Brescia. The translation appeared in Euclide Megarense ... solo introduttore delle scientie mathematice, meaning Euclid of Megara ... only introducer of scientific mathematics.
Megara should have been Alexandria, a common mistake. The geometer, Euclid of Alexandria, lived c. 325-264 BCE. The philosopher, Euclid of Megara, lived c. 430-360 BCE.
The Title page of Tartaglia's edition of Euclid's Elements can be seen below.
1543 Niccolo Fontana Tartaglia Euclide Megarense Title Page
1543 Tartaglia's multiplication definition from Euclid's Elements