probability/͵prɑbəˋbIlətI; ˌprɒbəˈbIləti or ˌprɒbəˈbIlIti/n plural probabilities 1 [C,U] how likely it is that something will happen 可能性﹐机率﹐概率: There's a high probability of success. 成功的机率很高。+(that) What's the probability that she will inherit the disease? 她经遗传得这种病的概率是多少?2 in all probability very probably 很可能﹐十有八九: In all probability, he's missed the bus. 他十有八九是没赶上这趟公共汽车。3 [singular 单数] something that is likely to happen or exist 可能发生的事﹔可能存在的事: War is a real probability now. 战争现在成了完全可能发生的事。