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[see-kwes-trey-shuh n, si-kwes-] /ˌsi kwɛsˈtreɪ ʃən, sɪ kwɛs-/
removal or separation; banishment or exile.
a withdrawal into seclusion; retirement.
segregation from others; isolation:
sequestration of jurors during a trial.
  1. the sequestering of property.
  2. confiscation or seizure.
Chemistry. 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.
the trapping of a chemical in the atmosphere or environment and its isolation in a natural or artificial storage area:
Carbon sequestration can reduce global warming.
  1. the process of implementing an automatic cut in government spending across most departments, agencies, etc.:
    efforts to avoid or delay sequestration.
  2. an instance of this:
    An $80 billion sequestration would lead to massive layoffs.
Origin of sequestration
1350-1400; Middle English < Late Latin sequestrātiōn- (stem of sequestrātiō), equivalent to sequestrāt(us) (past participle of sequestrāre to sequester) + -iōn- -ion
Related forms
nonsequestration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for sequestration


the act of sequestering or state of being sequestered
(law) the sequestering of property
(chem) the effective removal of ions from a solution by coordination with another type of ion or molecule to form complexes that do not have the same chemical behaviour as the original ions See also sequestrant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for sequestration

c.1400, from Late Latin sequestrationem (nominative sequestratio) "a depositing," noun of action from past participle stem of Latin sequestrare (see sequester).

Online Etymology Dictionary, © 2010 Douglas Harper
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sequestration in Medicine

sequestration se·ques·tra·tion (sē'kwĭ-strā'shən, sěk'wĭ-)

  1. The formation of a sequestrum.

  2. Loss of blood or of its fluid content into spaces within the body, so that the circulating volume diminishes.

  3. The inhibition or prevention of normal ion behavior by combination with added materials, especially the prevention of metallic ion precipitation from solution.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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