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occurrence

n.
US //əˈkɝəns// UK //əkˈɜːɹəns// oc·cur·rence
  1. 1 an event (n.)
    B2 Upper Intermediate

    something that happens, especially an event that is not planned.

    an instance of something happening; a specific event or incident.

    Example

    Power cuts are a common occurrence during the stormy winter months.

    Example

    The sudden appearance of the rare bird in a suburban garden was such an unusual occurrence that it drew birdwatchers from across the country.

    Usage

    Often used with adjectives like 'common', 'rare', or 'everyday'.

    Pitfall
    It was a strange occurance.
    It was a strange occurrence.

    The word is frequently misspelled; remember it has a double 'c' and a double 'r'.

  2. 2 existence or frequency (n.)
    C1 Advanced Academic Technical Science

    the fact of something existing or being found in a place.

    the fact or frequency of something appearing or existing within a particular place or dataset.

    Example

    Scientists are studying the occurrence of microplastics in the local river.

    Example

    The researchers noted a high occurrence of specific mineral deposits along the fault line, suggesting a complex geological history.

    Usage

    Often followed by the preposition 'of'.

    Teacher's tip

    In academic writing, this sense is used to discuss how often a specific feature or substance appears in a sample.

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  1. 3 linguistic aspect (n.)
    C2 Proficiency Technical Formal Science

    the way a verb describes an action happening over time.

    the lexical aspect or 'aktionsart' of a verb or predicate, specifically regarding how it unfolds in time.

    Example

    The professor explained how the occurrence of the verb changed its meaning.

    Example

    In formal semantics, the occurrence of a predicate is analyzed based on whether the action has a natural endpoint or continues indefinitely.

    Usage

    Used as a technical term in linguistics and grammar.

    Teacher's tip

    This is a highly specialized term; most learners will only encounter it in advanced linguistics textbooks.

Origin

From Middle French occurrence, from Medieval Latin occurrentia. Morphologically occur + -ence.

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