# aleatoric

CEFR C2 · Adjective

Source: https://englishreference.com/word/aleatoric
Updated: 2026-09-28

## Definition

depending on chance, randomness, or unpredictable luck rather than a set rule.

For teachers: characterized by randomness, chance, or inherent variability that cannot be reduced through further observation or data collection.

## Examples

- Rolling a pair of fair dice is an aleatoric process because the outcome is purely random.
- The weather forecast accounts for aleatoric variability in chaotic atmospheric air currents.
- Autonomous vehicles must model aleatoric sensor noise separately from epistemic model errors to ensure safe navigation.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.