Dictionary

lesion

noun le·sion \ˈlē-zhən\

medical : an injured or diseased spot or area on or in the body

Full Definition of LESION

: an abnormal change in structure of an organ or part due to injury or disease; especially : one that is circumscribed and well defined

— le·sioned \-zhənd\ adjective

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Middle English, from Anglo-French, from Latin laesion-, laesio, from laedere to injure

First Known Use: 15th century

LESION Defined for Kids

noun le·sion \ˈlē-zhən\

: an abnormal spot or area of the body caused by sickness or injury

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