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Pronunciation: me-tath'e-sis


  1. Transfer of a pathologic product (a calculus) from one place to another where it causes less inconvenience or injury, when it is not possible or expedient to remove it from the body.
  2. In chemistry, a double decomposition, wherein a compound, A-B, reacts with another compound, C-D, to yield A-C + B-D, or A-D + B-C.

[meta- + G. thesis, a placing]

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