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 The transit village is stalled, however, stymied by the tech titan’s current regimen of cost controls, layoffs and cutbacks in Google’s real estate footprint. George Avalos, The Mercury News, 15 May 2024 Some experts on the anti-calorie-counting side believe that, beyond being a disappointment for generations of dieters, calorie-reduction regimens and their promoters bear some responsibility for the obesity epidemic. Michelle Stacey, Smithsonian Magazine, 14 May 2024 See all Example Sentences for regimen 

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 24 May. 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

More from Merriam-Webster on regimen

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