from The Century Dictionary.

  • noun The thing as imagined, as opposed to datum, the thing as given; theory, as opposed to observed fact.


Sorry, no etymologies found.


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  • In Henry's lexicon, these two moments indicate respectively the exemplar, which is the divine idea, and the exemplatum (also called ideatum), which is an essence fully constituted in its quidditative content and so able to be placed in act.

    Hitler's Angel (A Meta Christmas Carol)

  • I say intrinsic, in order to exclude that mark which is extrinsic, namely, the agreement between the idea and its object (ideatum).

    The Ethics

  • (ideatum); thus a circle is different from the idea of a circle.

    On the Improvement of the Understanding


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