- 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.
- 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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Examples: glitazone, GI cocktail, etc.