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cohort

[koh-hawrt] /ˈkoʊ hɔrt/
noun
1.
a group or company:
She has a cohort of admirers.
2.
a companion or associate.
3.
one of the ten divisions in an ancient Roman legion, numbering from 300 to 600 soldiers.
4.
any group of soldiers or warriors.
5.
an accomplice; abettor:
He got off with probation, but his cohorts got ten years apiece.
6.
a group of persons sharing a particular statistical or demographic characteristic:
the cohort of all children born in 1980.
7.
Biology. an individual in a population of the same species.
Origin
1475-1485
1475-85; < Middle French cohorte < Latin cohort- (stem of cohors) farmyard, armed force (orig. from a particular place or camp), cohort, retinue, equivalent to co- co- + hort- (akin to hortus garden); replacing late Middle English cohors < L nominative singular
Synonyms
2. friend, comrade, fellow, chum, pal, buddy.
Usage note
A cohort was originally one of the ten divisions of a legion in the Roman army, containing from 300 to 600 men. The most common use of cohort today is in the sense “group” or “company”: A cohort of hangers-on followed the singer down the corridor. In a development emphasizing the idea of companionship, cohort has also come to mean a single companion, associate, or the like: The senator strode into the room followed by his faithful cohort, his son-in-law.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for cohort
  • We know that they make up the largest population cohort in history.
  • Teenage pregnancy and adverse birth outcomes: a large population based retrospective cohort study.
  • Most universities limit the number of courses a single candidate can teach in order to protect the full-time cohort.
  • The same thing happened to me, but my advisor told me that all of her advisees in my cohort were contacted.
  • Get to know the people in your cohort, in your program, and in the field on a national level.
  • So there is actually a large cohort of people in your shoes out there.
  • But it's worth noting, those students are not emblematic of their larger peer cohort.
  • But in terms of clinical complications of cardiovascular disease the cohort really hasn't aged enough for us to study that.
  • Well, that cohort of workers is getting ready to retire.
  • He remade the bureau in his image, pushed out the old guard and hired more than half its present cohort.
British Dictionary definitions for cohort

cohort

/ˈkəʊhɔːt/
noun
1.
one of the ten units of between 300 and 600 men in an ancient Roman Legion
2.
any band of warriors or associates: the cohorts of Satan
3.
(mainly US) an associate or follower
4.
(biology) a taxonomic group that is a subdivision of a subclass (usually of mammals) or subfamily (of plants)
5.
(statistics) a group of people with a statistic in common, esp having been born in the same year
Word Origin
C15: from Latin cohors yard, company of soldiers; related to hortus garden
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
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Word Origin and History for cohort
n.

early 15c., "company of soldiers," from Middle French cohorte (14c.) and directly from Latin cohortem (nominative cohors) "enclosure," meaning extended to "infantry company" in Roman army (a tenth part of a legion) through notion of "enclosed group, retinue," from com- "with" (see co-) + root akin to hortus "garden," from PIE *ghr-ti-, from root *gher- "to grasp, enclose" (see yard (n.1)). Sense of "accomplice" is first recorded 1952, American English, from meaning "group united in common cause" (1719).

Online Etymology Dictionary, © 2010 Douglas Harper
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cohort in Medicine

cohort co·hort (kō'hôrt')
n.
A defined population group followed prospectively in an epidemiological study.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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