reg·​i·​men ˈre-jə-mən How to pronounce regimen (audio)
ˈre-zhə- How to pronounce regimen (audio)
: a systematic plan (as of diet, therapy, or medication) especially when designed to improve and maintain the health of a patient
: a regular course of action and especially of strenuous training
the daily regimen of athletes

Did you know?

Being but humble lexicographers, we cannot say whether an apple a day truly keeps the doctor away, but as far as regimens go, one could do a lot worse than snackin’ on a McIntosh. Regimen, which usually refers to a system of rules or guidelines—often for living a healthy life or taking a regular dose of exercise—comes ultimately from a Latin verb, regere, meaning “to direct.” Regere led in apple-pie order to the English word regimen, first by way of the Latin noun regimen, meaning “steering” or “control,” and then via the Medieval Latin regimen, referring to a set of rules. Other regere descendants fell further from the tree, including correct, erect, region, rule, and surge. Be sure not to confuse regimen with another of its kin, regiment, which refers to a military unit, as doing so could upset the apple cart.

Examples of regimen in a Sentence

with the start of the new year, a new party will have regimen over the nation and, hopefully, bring some much-needed change
Recent Examples on the Web Viewers appreciated the behind-the-scenes looks at training regimens and cutting weight. Emmanuel Morgan, New York Times, 13 Apr. 2024 This personalized strategy, combined with her focus on creating a sustainable home care regimen, has garnered a loyal clientele and a reputation for excellence in the industry. William Mullane, USA TODAY, 12 Apr. 2024 So in many cases, doctors simply make their best guess for a regimen. Angus Chen, STAT, 11 Apr. 2024 While some adults might be told by their providers to do a low-dose daily aspirin regimen to help reduce their cardiovascular disease risk, that’s not a blanket recommendation for everyone. Nick Blackmer, Verywell Health, 3 Apr. 2024 Medterra Brand Overview: Plant a pill into your daily regimen and experience the full range of hemp’s benefits. All Cbd Naturals, Discover Magazine, 3 Apr. 2024 Wyatt didn’t need the technology filled, high performing shoes, advanced training regimens or high quality supplements to break the 40-second mark. Charles Baggarly, Fort Worth Star-Telegram, 3 Apr. 2024 Those changes would also bar mifepristone prescriptions through telehealth, leaving some to rely on a less effective regimen with more unpleasant side effects. Sonja Sharp, Los Angeles Times, 28 Mar. 2024 That could mean that transplant patients wouldn’t have to go on a regimen of drugs that slow down the immune system in order to prevent rejection. Alex Knapp, Forbes, 27 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'regimen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English, from Medieval Latin regimin-, regimen position of authority, direction, set of rules, from Latin, steering, control, from regere to direct

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of regimen was in the 14th century


Dictionary Entries Near regimen

Cite this Entry

“Regimen.” Dictionary, Merriam-Webster, Accessed 18 Apr. 2024.

Kids Definition


reg·​i·​men ˈrej-ə-mən How to pronounce regimen (audio)
: a regular course of treatment
: a form of government : rule

Medical Definition


ˈrej-ə-mən also ˈrezh-ə-
: a systematic plan (as of diet, therapy, or medication) especially when designed to improve and maintain the health of a patient

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