intr.v. sub·sid·ed, sub·sid·ing, sub·sides
a. To become less intense, active, or severe; abate.
b. To become smaller or less prominent, as swelling. See Synonyms at decrease.
2. To move or sink to a lower or normal level: The earth subsided as the aquifer drained away.
3. To sink to the bottom, as a sediment.
4. To sit down slowly; settle down: "She looked swiftly around, and once she saw her husband, subsided primly onto the edge of a chair" (Jane Stevenson).
[Latin subsīdere : sub-, sub- + sīdere, to settle; see sed- in the Appendix of Indo-European roots.]
sub·sidence (səb-sīdns, sŭbsĭ-dns) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.