factor - definition and synonyms

noun [countable] 

Your browser doesn’t support HTML5 audio

  1. 1
    one of the things that influence whether an event happens or the way that it happens
    an important/major/key factor:

    Safety is the single most important factor in a car’s design.

    risk factor (=something that may cause something dangerous or harmful):

    Lack of exercise is also a risk factor for heart disease.

    factor in:

    Public pressure was a factor in the government’s decision.

  2. 2
    a measurement that shows how strong or large something is

    Use a sun cream with a high protection factor.

  3. 3
    maths a number that you can divide a larger number by exactly

    2 and 3 are factors of 6.