probability
playSimple Definition of probability

: the chance that something will happen

: something that has a chance of happening

: a measure of how often a particular event will happen if something (such as tossing a coin) is done repeatedly
Full Definition of probability
plural probabilities
1 : the quality or state of being probable
2 : something (as an event or circumstance) that is probable
3 a (1) : the ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes (2) : the chance that a given event will occur b : a branch of mathematics concerned with the study of probabilities
4 : a logical relation between statements such that evidence confirming one confirms the other to some degree
Examples of probability in a sentence
There is a low probability that you will be chosen.
There is some probability of rain tomorrow.
With the dark clouds moving in, rain seems more like a probability than a possibility.
The probability of a coin coming up heads is one out of every two tries.
15th Century
First Known Use of probability
15th century
Other Mathematics and Statistics Terms
Rhymes with probability
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PROBABILITY Defined for Kids
probability
playDefinition of probability for Students
plural probabilities
1 : the chance of happening <The probability of rain is low.>
2 : something likely <Rain is a probability.>
3 : a measure of how likely a given event is <The probability of a coin landing face up is 1⁄2.>
Learn More about probability

Thesaurus: All synonyms and antonyms for "probability" Spanish Central: Translation of "probability" Nglish: Translation of "probability" for Spanish speakers Britannica English: Translation of "probability" for Arabic speakers Britannica.com: Encyclopedia article about "probability"
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