Cohort

Cohort can mean any of the following:

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• 1. A Cohort (military unit) of a Roman legion.
• 2. an age group in statistics, see cohort (statistics).
• 3. A Cohort study is a form of longitudinal study used in medicine and Social science.
• 3. A concept in computer science.
• 4. In biology, cohort is a term for a group of allied orders or families of plants or animals.
• 5. A supporter as used in (American English from around 1950). Usually used in a negative sense as in, Cohorts in crime.
• 6. A Skull and Bones class is called a cohort. One cohort gets initiated every year.