an·​no·​ta·​tion | \ ˌa-nə-ˈtā-shən How to pronounce annotation (audio) \

Definition of annotation

1 : a note added by way of comment or explanation The bibliography was provided with helpful annotations.
2 : the act of annotating something

Examples of annotation in a Sentence

Without the annotations, the diagram would be hard to understand. the author's annotation of the diagram
Recent Examples on the Web The company specializes in data annotation and digital microwork that can be performed by low-income people in the developing world. Raksha Vasudevan, Wired, 20 July 2022 Many of the staff were data annotation specialists. Los Angeles Times, 29 June 2022 Many of the staff were data annotation specialists, all of which are hourly positions, one of the people said. Edward Ludlow, Fortune, 29 June 2022 In fact, Tesla continues to publicly post some job openings for data annotation workers. Matt Mcfarland, CNN, 29 June 2022 Snip & Sketch also comes with helpful screenshot annotation and editing tools to bring the best out of your screenshots. Toby Grey, BGR, 24 May 2022 My own reading turned up poor annotation and sloppy factual errors, including mischaracterizations of the circumstances around the writing and editing of Anne’s diary. Ruth Franklin, The New York Review of Books, 11 May 2022 There is no dot-dot-dot icon to demonstrate that a non-iPhone user is typing, for example, and an iMessage heart or thumbs-up annotation has long conveyed to Android users as text instead of images. Jacob Carpenter, Fortune, 10 Jan. 2022 Make sure annotation guidelines are clear and there is consistency across the decisions made by different annotators (pdf). Sandeep Konam, Quartz, 2 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'annotation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of annotation

15th century, in the meaning defined at sense 1

History and Etymology for annotation

see annotate

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Time Traveler for annotation

Time Traveler

The first known use of annotation was in the 15th century

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Statistics for annotation

Last Updated

3 Aug 2022

Cite this Entry

“Annotation.” Dictionary, Merriam-Webster, Accessed 10 Aug. 2022.

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More Definitions for annotation


an·​no·​ta·​tion | \ ˌa-nə-ˈtā-shən How to pronounce annotation (audio) \

Legal Definition of annotation

1 : a note added (as to a statute) by way of comment or explanation often furnishing summaries of relevant court decisions
2 capitalized : an informational and descriptive note or essay (as about a case or legal issue) especially in American Law Reports


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