# probability

*probability*on Thesaurus.com

the quality or fact of being probable.

a strong likelihood or chance of something: The probability of the book's success makes us optimistic.

a probable event, circumstance, etc.: Our going to China is a probability.

Statistics.

the relative possibility that an event will occur, as expressed by the ratio of the number of actual occurrences to the total number of possible occurrences.

the relative frequency with which an event occurs or is likely to occur.

## Idioms about probability

in all probability, very probably; quite likely: The factory will in all probability be relocated.

## Origin of probability

^{1}

## Other words from probability

- non·prob·a·bil·i·ty, noun, plural non·prob·a·bil·i·ties.
- su·per·prob·a·bil·i·ty, noun, plural su·per·prob·a·bil·i·ties.

## Words Nearby probability

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

## How to use probability in a sentence

The

*probability*an interval had zero signals was the*probability*that the first source didn’t emit a signal, 1−p, times the*probability*the second source didn’t emit a signal, 1−q.In fact, for cancer, historically, the

*probability*of success is about 5 percent.Will a Covid-19 Vaccine Change the Future of Medical Research? (Ep. 430) | Stephen J. Dubner | August 27, 2020 | FreakonomicsPhysicists have algorithms to compute the probabilities of no-loop and one-loop scenarios, but many two-loop collisions bring computers to their knees.

The Mathematical Structure of Particle Collisions Comes Into View | Charlie Wood | August 20, 2020 | Quanta MagazineSimply put, in-market audiences are potential leads that have a high

*probability*of conversion.How to use in-market audiences for better search campaigns | Harikrishna Kundariya | August 18, 2020 | Search Engine WatchWhen you were told that your opponent would “play rock or paper with equal

*probability*,” most solvers assumed that meant both probabilities were 50 percent, rather than being equal but less than 50 percent.

*probability*: 96 percent, unless this spring you finally gave up and ordered central air conditioning, in which case, 15 percent.A resurrection would be a miracle and as such would defy all “

*probability*.”The best we can offer is a

*probability*that an earthquake might occur along a fault in a given period of time.A Lot of Earthquakes Have Been Reported Lately, but Scientists Aren’t Worried | Erik Klemetti | April 2, 2014 | THE DAILY BEASTFirst, how come so many people mistake

*probability*estimates for predictions?You Don’t Need Nate Silver to ‘Predict’ a GOP Win This Fall | Jeff Greenfield | March 26, 2014 | THE DAILY BEASTThe meaning of a “

*probability*” estimate can be understood by resorting to the last refuge of political metaphors: sports.You Don’t Need Nate Silver to ‘Predict’ a GOP Win This Fall | Jeff Greenfield | March 26, 2014 | THE DAILY BEASTAt last there appeared some

*probability*of their accomplishing this, after a most curious and truly Mexican fashion.But if the Bible was written by men, some of them more or less inspired, then it would not, in all

*probability*be wholly perfect.God and my Neighbour | Robert BlatchfordHad justice been ever taken into account, you and I would, in all

*probability*, not have met on the present business.We arrive then at this one certain fact, that the flatter the model of a violin the greater the

*probability*of a good fine tone.Violins and Violin Makers | Joseph PearceI have not as yet made any inquiry about the

*probability*of getting adventurers for this new concern.Life of Richard Trevithick, Volume II (of 2) | Francis Trevithick

## British Dictionary definitions for probability

/ (ˌprɒbəˈbɪlɪtɪ) /

the condition of being probable

an event or other thing that is probable

statistics a measure or estimate of the degree of confidence one may have in the occurrence of an event, measured on a scale from zero (impossibility) to one (certainty). It may be defined as the proportion of favourable outcomes to the total number of possibilities if these are indifferent (mathematical probability), or the proportion observed in a sample (empirical probability), or the limit of this as the sample size tends to infinity (relative frequency), or by more subjective criteria (subjective probability)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for probability

[ prŏb′ə-bĭl′ĭ-tē ]

A number expressing the likelihood of the occurrence of a given event, especially a fraction expressing how many times the event will happen in a given number of tests or experiments. For example, when rolling a six-sided die, the probability of rolling a particular side is 1 in 6, or 16.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## Cultural definitions for probability

A number between zero and one that shows how likely a certain event is. Usually, probability is expressed as a ratio: the number of experimental results that would produce the event divided by the number of experimental results considered possible. Thus, the probability of drawing the ten of clubs from an ordinary deck of cards is one in fifty-two (1:52), or one fifty-second.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## Other Idioms and Phrases with probability

see in all probability.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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