Definition of stochastic in US English:



  • Randomly determined; having a random probability distribution or pattern that may be analyzed statistically but may not be predicted precisely.

    • ‘It was heavy duty mathematics at that, involving an obscure technique known as stochastic differential equations.’
    • ‘The fact that the problem is stochastic means that the airline needs to work with expected values and probability distributions, which makes the optimisation harder to solve.’
    • ‘Let us now sum up his mathematical contributions which were almost all in the area of mathematical statistics, more precisely stochastic analysis, random processes, regenerative phenomena and mathematical genetics.’
    • ‘Here, we provide a more detailed set of examples, examining the impact of nonlinear population dynamics and stochastic variation in demographic parameters on elasticity analysis.’
    • ‘He has written on stochastic geometry and its applications, and the statistical theory of shape.’
    unsystematic, arbitrary, unmethodical, haphazard, unarranged, unplanned, undirected, casual, indiscriminate, non-specific, stray, erratic
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Mid 17th century: from Greek stokhastikos, from stokhazesthai ‘aim at, guess’, from stokhos ‘aim’.