# Definition:Euclid's Definitions - Book VII/15 - Multiply

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## Definition

In the words of Euclid:

*A number is said to***multiply**a number when that which is multiplied is added to itself as many times as there are units in the other, and thus some number is produced.

(*The Elements*: Book $\text{VII}$: Definition $15$)

## Sources

- 1926: Sir Thomas L. Heath:
*Euclid: The Thirteen Books of The Elements: Volume 2*(2nd ed.) ... (previous) ... (next): Book $\text{VII}$. Definitions