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Definition of annotation

annotation

/ˌæn.əˈteɪ.ʃən/
an · no · ta · tion
Plural:annotations
•
Adjective:annotative
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annotation Lexical Profile

annotation Game Scores & Validity

• noun

1

A note of explanation, comment, or criticism added to a text, diagram, or document.

Example

"The student filled the margins of the novel with helpful annotations before the literature exam."

2

The act or process of adding explanatory notes, metadata, or labels to a text or dataset.

Example

"Accurate data annotation is essential for training modern machine learning models."

Synonyms
View all synonyms for annotation

• Rhymes for annotation

• Nearby Words

anniversary
annona
annotate
annotation
annotator
announce
announcement

Word Origin & Etymology

Borrowed in the mid-15th century from Middle French annotation and directly from Latin annotationem, a noun of action from the verb annotare ('to add a note to'), formed from ad- ('to') and notare ('to mark or note').

Cite this Entry

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