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Definition of lesion

lesion

/ˈliː.ʒən/
le · sion
Plural:lesions
•
Adjective:lesional
•
Past Simple:lesioned
•
Past Participle:lesioned
•
Present Participle:lesioning
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lesion Lexical Profile

lesion Game Scores & Validity

• noun

1

A localized region in an organ or tissue that has suffered structural damage through injury or disease, such as a wound, ulcer, abscess, or tumor.

Example

"The dermatologist examined the small skin lesion to determine whether a biopsy was necessary."

Synonyms
View all synonyms for lesion

• verb

1

To cause or produce a localized structural injury or pathological change in an organ or tissue (especially in experimental neuroscience or surgery).

Example

"Researchers lesioned a specific pathway in the hippocampus to study its role in spatial memory."

Synonyms
View all synonyms for lesion
Antonyms
View all antonyms for lesion

• Rhymes for lesion

• Nearby Words

lesbianism
lesbos
leschenaultia
lesion
lesotho
lespedeza
less

Word Origin & Etymology

Borrowed from Old French lesion, from Latin laesio ('an injury'), derived from the verb laedere ('to strike, hurt, or injure'). It shares its Latin root with 'collide' and 'elide'.

Cite this Entry

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