1. An instance of breaking open or bursting: a rupture in the fuel line.
2. A break in friendly relations.
a. A hernia, especially of the groin or intestines.
b. A tear in an organ or tissue: rupture of an appendix; ligament rupture.
v. rup·tured, rup·tur·ing, rup·tures
To cause to undergo or suffer a rupture: The accident ruptured his spleen.
To undergo or suffer a rupture: The blister ruptured. Their friendship ruptured.
[Middle English, from Old French, from Latin ruptūra, from ruptus, past participle of rumpere, to break; see reup- 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.