English Lexicon

Probability Theory

/prəˌbæb.ɪˈlɪ.ti ˈθɪə.ri/
nounCEFR C1 (Advanced)Top #15000 frequency
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2 senses
As noun
  1. 1

    A branch of mathematics concerned with the analysis of random phenomena and the likelihood of various outcomes.

    "Probability theory helps in predicting the chances of winning a lottery."
  2. 2

    The mathematical framework for quantifying uncertainty and making informed decisions based on statistical data.

    "In finance, probability theory is used to assess risks and returns."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'probability' originates from the Latin word 'probabilitas', which means 'worthiness' or 'probability'. 'Theory' comes from the Greek 'theoria', meaning 'contemplation' or 'speculation'. The combination reflects the mathematical study of uncertainty and chance that evolved significantly during the 17th century.

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