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Pronunciation: der'i-va'shun


  1. The source or process of an evolution.
  2. The drawing of blood or body fluids to one part to relieve congestion in another.

Synonym(s): revulsion

[L. derivatio, fr. derivo, pp. -atus, to draw off, fr. rivus, a stream]

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.