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regimen

[rej-uh-muh n, -men, rezh-]
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noun
  1. Medicine/Medical. a regulated course, as of diet, exercise, or manner of living, intended to preserve or restore health or to attain some result.
  2. regime(defs 1, 2).
  3. Grammar. government(def 9).
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Origin of regimen

1350–1400; Middle English < Latin: rule, government, guidance, equivalent to reg(ere) to rule + -i- -i- + -men, noun suffix of result
Can be confusedregime regimen regiment
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for regimen

regimen

noun
  1. Also called: regime a systematic way of life or course of therapy, often including exercise and a recommended diet
  2. administration or rule
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Word Origin

C14: from Latin: guidance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for regimen

n.

c.1400, medical, "course of diet, exercise, etc. for sake of health;" mid-15c., "act of governing," from Old French regimen (14c.), from Latin regimen "rule, guidance, government, means of guidance, rudder," from regere "to rule" (see regal).

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Online Etymology Dictionary, © 2010 Douglas Harper
regimen in Medicine

regimen

(rĕj′ə-mən, -mĕn′)
n.
  1. A regulated system, as of diet, therapy, or exercise, intended to promote health or achieve another beneficial effect.
  2. A course of intense physical training.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.