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"
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"
中英词源
probability 概率
来自probable,可能的，-ity,名词后缀。引申词义概率。
probability (n.)
mid-15c., "quality of being probable," from Old French probabilite (14c.) and directly from Latin probabilitatem (nominative probabilitas) "credibility, probability," from probabilis (see probable). Meaning "something likely to be true" is from 1570s; mathematical sense is from 1718.
词态变化
复数 probabilities;
权威造句
1. Formal talks are still said to be a possibility, not a probability.
据称正式会谈仍有可能，但可能性不大。
来自柯林斯例句
2. The probability is that prices will rise rapidly.
物价有可能会迅速上升。
来自《权威词典》
3. The probability that it will rain today is high.
今天下雨的可能性很大.
来自《简明英汉词典》
4. In all probability, we shall be away for a month.
