noun co·hort \ˈkō-ˌhrt\

: a friend or companion

: a group of people used in a study who have something (such as age or social class) in common

Full Definition of COHORT

a :  one of 10 divisions of an ancient Roman legion
b :  a group of warriors or soldiers
c :  band, group
d :  a group of individuals having a statistical factor (as age or class membership) in common in a demographic study <a cohort of premedical students>
:  companion, colleague <a few of their…cohorts decided to form a company — Burt Hochberg>

Examples of COHORT

  1. The police arrested the gang's leader and his cohorts.
  2. Depression was a common problem for people in that age cohort.

Origin of COHORT

Middle English, from Latin cohort-, cohors — more at court
First Known Use: 15th century

Other Military Terms

bivouac, logistics, petard, salient, sally, supernumerary, tactical
Medical Dictionary


noun co·hort \ˈkō-ˌh(ə)rt\

Medical Definition of COHORT

:  a group of individuals having a statistical factor (as age or risk) in common <the population consisted of two cohorts: 204 clearly exposed and 163 not exposed—R. R. Suskind et al>


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