reg·​i·​men | \ˈre-jə-mən also ˈre-zhə- \

Definition of regimen 

1a : a systematic plan (as of diet, therapy, or medication) especially when designed to improve and maintain the health of a patient

b : a regular course of action and especially of strenuous training the daily regimen of athletes

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Did You Know?

We borrowed "regimen" straight from Latin, spelling and all - but in Latin, the word simply meant "rule" or "government." In English, it usually refers to a system of rules or guidelines, often for living a healthy life or taking a regular dose of exercise. The Latin regimen derives from another Latin word, the verb "regere," which means "to lead straight" or "to rule." If you trace straight back from "regere," you'll find that "regimen" has plenty of lexical kin, including "correct," "erect," "region," "rule," and "surge." If you are using the "training" sense of "regimen," be careful not to confuse the word with "regiment," another "regere" descendant, which is used for a military unit.

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

That attitude evolved over time for the skinny 160-pound teenager who used vitamins, protein shakes and a weight-lifting regimen to add muscle and increase his velocity to the high 90s. David Haugh,, "White Sox pitcher Reynaldo Lopez looks capable of being the bell cow of rotation," 29 June 2018 Despite adhering to a strict daily skin-care regimen—that includes religiously washing makeup off before bed—acne is bound to strike, often unexpectedly, in the summer. Jenna Rennert, Vogue, "6 Ways to Get Rid of Acne for Good This Summer," 8 July 2018 Tolliver, 33, credited a new shooting regimen to the Free Press recently for his career-best shooting last season — his 43.6 percent 3-point percentage ranked sixth in the NBA. Vince Ellis, Detroit Free Press, "Detroit Pistons: Anthony Tolliver reportedly to sign with Timberwolves," 2 July 2018 Thanks to a streamlined hormonal regimen and a simplified device for culturing embryos, an IVF cycle at ABC costs just £2,500, including all tests, medicines, and doctor visits. Anna Louie Sussman,, "Falling Birthrates Call for More Accessible Fertility Treatment," 18 June 2018 Head was diagnosed with ulcerative colitis, an auto-immune condition that has led to a daunting treatment regimen. Gabe Hauari, The Courier-Journal, "Oldham County's Sophia Head wins the Courier Journal Courage Award," 7 June 2018 Easy on the Exfoliation The 3-step regimen of cleansing, exfoliating, and moisturizing is a good foundation to build your routine off. Adam Hurly, GQ, "These Are the Old School Grooming Rules You Should Be Breaking," 28 Mar. 2018 Others around him have adopted the classic TRF regimen, including his 15-year-old daughter, his mother and several graduate students in his lab. Author: David Kohn, Anchorage Daily News, "Timing your meals may help with weight loss," 27 Mar. 2018 Here, Bowe and other experts break down how to carefully incorporate the powerhouse ingredient into your regimen to achieve a supernaturally fresh-faced complexion, now and for decades to come. Lauren Valenti, Vogue, "A Beginner's Guide to Retinol—Here's Everything You Need to Know," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'regimen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of regimen

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

History and Etymology for regimen

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

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Last Updated

5 Nov 2018

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Time Traveler for regimen

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

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More Definitions for regimen



English Language Learners Definition of regimen

: a plan or set of rules about food, exercise, etc., to make someone become or stay healthy


reg·​i·​men | \ˈre-jə-mən \

Kids Definition of regimen

: a systematic course of action a daily exercise regimen


reg·​i·​men | \ˈrej-ə-mən also ˈrezh-ə-\

Medical Definition of regimen 

: 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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More from Merriam-Webster on regimen

Thesaurus: All synonyms and antonyms for regimen

Spanish Central: Translation of regimen

Nglish: Translation of regimen for Spanish Speakers

Britannica English: Translation of regimen for Arabic Speakers

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a private place of worship

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