[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/cohort/)

[dictionaries](https://md.dictionary.elamur.ai/free/en/) / [English](https://md.dictionary.elamur.ai/free/en/english/) / [C](https://md.dictionary.elamur.ai/free/en/english/c/) / cohort

# cohort

noun (a cohort, cohorts)

«cohort» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A cohort is a group of people who have something in common, such as the same age or starting school together. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#m1)
2. (formal) A cohort is a group of people studied together in research. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#m2)
3. (history) A cohort was a unit of soldiers in the Roman army, of about 480 men. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#m3)
4. (informal) A cohort can mean a supporter or companion of someone. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#m4)

### In the lessons

In schools and formal reports, «this year's cohort» means all the pupils in one year group. In history lessons, a Roman legion was made of cohorts. In science, a cohort study follows the same people over time. Phrases: year cohort, cohort study, a Roman cohort.

### Examples

- This year's cohort of pupils did well in the tests. (formal) [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x1)
- A Roman cohort had six centuries of soldiers. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x2)
- The study followed a cohort of 800 children. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x3)
- The new cohort of nurses started training today. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x4)
- The cohort has 90 pupils in 3 classes, so 30 in each. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x5)
- The villain arrived with his cohorts. (informal) [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/#x6)

### Note

Countable noun; formal. In the Roman army, a legion had 10 cohorts. The informal sense «companions» is common but some people dislike it. In maths, a cohort split into equal classes is a division problem.

## On Mova

- [Trees and pragmatics of «cohort» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cohort/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«cohort» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/cohort.html) on Mova free.