Probability
WordNet
noun
(1) The quality of being probable; a probable event or the most probable event
"For a while mutiny seemed a probability"
"Going by past experience there was a high probability that the visitors were lost"
(2) A measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible
"The probability that an unbiased coin will fall with the head up is 0.5"
WiktionaryText
Etymology
< < ; see probable.
Noun
- the state of being probable; likelihood
- an event that is likely to occur
- the relative likelihood of an event happening
- a number, between 0 and 1, expressing the precise likelihood of an event happening