v. se·ques·tered, se·ques·ter·ing, se·ques·ters
1. To remove or set apart; segregate or hide: "Some of the actors ... found it disturbing that the director was sequestered in an off-stage control booth" (Gene D. Phillips). See Synonyms at isolate.
2. To cause to withdraw into seclusion: students who sequester themselves in libraries.
3. To remove or isolate (a chemical, often a gas) from an environment by incorporation, mixing, or insertion under pressure: plants that sequester toxins from wetlands; plans to sequester carbon dioxide produced by a power plant by injection into an underground aquifer.
a. Law To take temporary possession of (property) as security against legal claims.
b. To requisition and confiscate (enemy property).
To undergo sequestration.
[Middle English sequestren, from Old French, from Latin sequestrāre, to give up for safekeeping, from Latin sequester, depositary, trustee; see sekw-1 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.