General English

  • noun the quality of being probable
  • noun being likely to happen.

General Science

  • noun a statistical assessment of how likely something is


  • noun the likelihood that something will happen, expressed mathematically. Most people calculate probability on the basis of past experience.


  • A statistical calculation to determine the quantitative likelihood that something will happen.

Health Economics

  • (written as Probability)
    The frequentist definition is the proportion of times (as a decimal fraction) an event would occur if an experiment were repeated a large number of times. More generally, the chances (however assessed) of an event occurring. It lies between 0 and +1.
  • synonymLikelihood

Information & Library Science

  • noun the likelihood of something happening, often expressed as a fraction or percentage