1a circumstance, fact, or influence that contributes to a result:his skill was a factor in ensuring that so much was achieved she worked fast, conscious of the time factor Biology a gene that determines a hereditary characteristic:the Rhesus factor 2a number or quantity that when multiplied with another produces a given number or expression: an amount that exceeds it by a factor of 1000 or more Mathematics a number or algebraic expression by which another is exactly divisible. 3a level on a scale of measurement. (with numeral) a sunscreen of the sun protection factor specified:factor 30 sun cream 4 Physiology any of a number of substances in the blood, mostly identified by numerals, which are involved in coagulation. See factor VIII.
5an agent who buys and sells goods on commission: his father was chief factor for the Hudson’s Bay Company a company that buys a manufacturer’s invoices at a discount and takes responsibility for collecting the payments due on them. Scottish a land agent or steward: the house became home to the estate factor 1 Mathematicsanother term for factorize.last year researchers factored a number 155 digits long
2(of a company) sell (its invoices) to a factor: they collected rents while he factored these forfeited estates