Pronunciation: (sē"kwes-trā'shun, si-kwes-),[key] —n. 1. removal or separation; banishment or exile.
2. a withdrawal into seclusion; retirement.
3. Law. a. the sequestering of property.
b. confiscation or seizure.
4. Chem.the combining of metallic ions with a suitable reagent into a stable, soluble complex in order to prevent the ions from combining with a substance with which they would otherwise have formed an insoluble precipitate, from causing interference in a particular reaction, or from acting as undesirable catalysts.