probability

word

/ˌpɹɑbəˈbɪɫəˌti/
/pɹˌɒbəbˈɪlɪti/

Definition

The measure of how likely it is that a certain event will happen, usually expressed as a number between 0 (impossible) and 1 (certain).

Usage & Nuances

Mainly used in mathematics, statistics, science, and daily speech to express chance. Often followed by 'of': 'the probability of rain'. Not interchangeable with 'possibility'—'probability' suggests calculation or a specific chance, while 'possibility' just means something can happen.

Example Sentences

The probability of flipping a coin and getting heads is 0.5.

basic

There is a high probability it will rain tomorrow.

basic

The probability of winning the lottery is very low.

basic

There's a good probability we'll get there before noon if traffic is light.

natural

You can never be 100% sure, but the probability is in our favor.

natural

Scientists use probability to predict things like weather or disease outbreaks.

natural