reg·i·men (rĕjə-mən, -mĕn′)
a. A regulated system, as of medication, diet, or exercise, used to promote health or treat illness or injury.
b. A procedure, program, or routine: a regimen of mathematics seminars.
2. A systematic way of managing something: a crop regimen.
3. Archaic Governmental rule or control.
[Middle English, from Latin; see REGIME.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.