Group whose members share a significantexperience at a certain period of time or have one or more similar characteristics . People born in the same year, for example, are the birth cohorts (generation) for that year. Similarly, married men or those who smoke are cohorts of the other married men or other smokers. Read more
USAGE EXAMPLE
I am a member of the cohort called millennials because I was born after the cut off date for Generation X.