re·gime also ré·gime (rā-zhēm, rĭ-)
a. A government, especially an oppressive or undemocratic one: a fascist regime.
b. A usually heavy-handed administration or group in charge of an organization: Raises were canceled under the new regime.
a. A way of organizing or managing something; a system: an admissions regime at a college.
b. A regulated system of diet, exercise, or medical treatment; a regimen.
3. The period during which a particular administration or system prevails.
4. A prevailing pattern of water flow, as of a river.
[French régime, from Old French, from Latin regimen, from regere, to rule; see reg- 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.