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Meaning of excursus

ex•cur•sus

Pronunciation: (ek-skûr'sus), [key]
— pl. -sus•es, -sus.
  1. a detailed discussion of some point in a book, esp. one added as an appendix.
  2. a digression or incidental excursion, as in a narrative.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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