Emily Dickinson Lexicon

FAC'TOR, n. [L. factor; Fr. facteur; It. fattore; from L. facio.]

1. In commerce, an agent employed by merchants, residing in other places, to buy and sell, and to negotiate bills of exchange, or to transact other business on their account.
2. An agent; a substitute.
3. In arithmetic, the multiplier and multiplicand, from the multiplication of which proceeds the product.