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Definition of cohort

cohort

/ˈkoʊ.hɔːrt/
co · hort

Plural:cohorts
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cohort Lexical Profile

cohort Game Scores & Validity

• noun

1

A group of people with a shared characteristic, especially those born in the same period, entering an educational program together, or participating in a demographic or clinical study.

Example

"The longitudinal study tracked a cohort of five hundred university graduates over a ten-year period."


2

A supporter, companion, colleague, or associate.

Example

"The entrepreneur arrived at the conference accompanied by several of his closest business cohorts."


3

An ancient Roman military unit equal to one-tenth of a legion, typically comprising between three hundred and six hundred infantry soldiers.

Example

"The Roman commander positioned a fresh cohort along the northern ridge to reinforce the legion."

Synonyms
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Antonyms
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Word Nuance & Usage

Traditionally, "cohort" refers to a collective group of people rather than a single individual, though using it to mean an individual companion, colleague, or accomplice has become common in informal speech.

Word Origin & Etymology

Borrowed in the late 15th century from Middle French cohorte, from Latin cohors ('enclosed yard, crowd, military unit'), formed from co- ('together') and the root of hortus ('garden, enclosure').

Cite this Entry


Wordmom. (2026). Definition of Cohort. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/cohort
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