• Groupoid

    Origin

    group + -oid

    Full definition of groupoid

    Noun

    groupoid

    (plural groupoids)
    1. (algebra) A magma: a set with a total binary operation.
    2. (algebra and category theory) A set with a partial binary operation that is associative and has inverses and identities.A groupoid is a category in which every morphism is an isomorphism.
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