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English definition of “probability”

probability

noun [C or U]     /ˌprɒb.əˈbɪl.ɪ.ti/ US  /ˌprɑː.bəˈbɪl.ə.t̬i/
C1 the level of possibility of something happening or being true : What is the probability of winn ing ? The probability of gett ing all the answers correct is about one in ten. There's a high/ strong probability (that) (= it is very likely that) she'll be here. Until yesterday , the project was just a possibility , but now it has become a real probability (= it is likely to happen ). → Synonym likelihoodPossible and probable in all probability C2 used to mean that something is very likely : She will, in all probability, have left before we arrive .Possible and probable
(Definition of probability noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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