cohort

noun co·hort \ ˈkō-ˌhȯrt \
Updated on: 12 Dec 2017

Definition of cohort

1 : companion, colleague
  • a few of their … cohorts decided to form a company
  • —Burt Hochberg
2 a : band, group
  • a cohort of supporters
b : a group of individuals having a statistical factor (such as age or class membership) in common in a demographic study
  • a cohort of premedical students
  • the cohort of people born in the 1980s
c : one of 10 divisions of an ancient Roman legion
d : a group of warriors or soldiers

Examples of cohort in a Sentence

  1. The police arrested the gang's leader and his cohorts.

  2. Depression was a common problem for people in that age cohort.

Recent Examples of cohort from the Web

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

Did You Know?

In ancient times, a cohort was a military unit, one of ten divisions in a Roman legion. The term passed into English via French in the 15th century, when it was used in translations and writings about Roman history. Once cohort became established in our language, its meaning was extended, first to refer to any body of troops, then to any group of individuals with something in common, and later to a single companion. Some usage commentators have objected to this last sense because it can be hard to tell whether the plural refers to different individuals or different groups. The companion sense is well established in standard use, however, and its meaning is clear enough in such sentences as her cohorts came along with her to the game.

Origin and Etymology of cohort

Middle English, from Latin cohort-, cohors — more at court


COHORT Defined for English Language Learners

cohort

noun

Definition of cohort for English Language Learners

  • : a friend or companion

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


Medical Dictionary

cohort

noun co·hort \ ˈkō-ˌhȯ(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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