Simple Definition of cohort
: 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
1 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>
Examples of cohort in a sentence
The police arrested the gang's leader and his cohorts.
Depression was a common problem for people in that age cohort.
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
First Known Use: 15th century
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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