Coorti

Coorti is the Italian plural of coorte, meaning a group of people organized as a unit, often translated into English as cohort. In Italian usage the term can refer to a military unit, a social or administrative grouping, or a group of people studied together in research. The word derives from Latin cohors, which carried the sense of companionship, company, or a military unit.

In historical contexts, coorti are most closely associated with ancient Rome. A Roman legion was divided into cohorts, typically ten in number. Most cohorts contained about 480 infantry, organized into six centuries, with the first cohort usually being more prestigious and sometimes larger or reinforced. The concept of coorti as units of organization and discipline remained central to Roman military structure and strategy, and the term appears in historical and literary sources to denote these formations.

In modern usage, coorti appear in discussions of demography and epidemiology as a translation for cohort, referring to a group of individuals followed over time in a study. In Italian scholarship, birth cohorts or exposure cohorts may be described using coorti. The general sense of the word also encompasses any grouped or coordinated group of people, such as a military company, a team, or a cohort in organizational or educational settings.

Etymology-wise, coorti traces back to Latin cohors, from which the Italian coorte and the English term cohort are derived. Related forms include coorte (singular) and coorti mobili in historical texts when describing mobile or temporarily formed groups. See also cohort and coorte for broader context.