1. The act of closing or the state of being closed: closure of an incision.
2. Something that closes or shuts.
a. A bringing to an end; a conclusion: finally brought the project to closure.
b. A feeling of finality or resolution, especially after a traumatic experience: sought closure in returning to the scene of the accident.
4. See cloture.
5. The property of being mathematically closed.
tr.v. clo·sured, clo·sur·ing, clo·sures
To cloture (a debate).
[Middle English, from Old French, from Late Latin clausūra, fortress, lock, from clausus, enclosed; see CLOSE. Sense 4, translation of French clôture.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.