secondary source

noun

plural secondary sources
information science
: an article, report, etc. that is based on firsthand accounts or records of a thing being researched or studied but that is not itself a firsthand account
Primary sources are the raw materials of history—original documents and objects that were created at the time under study. They are different from secondary sources, accounts that retell, analyze, or interpret events, usually at a distance of time or place. Library of Congress
If you've attended one of my genealogy classes, you've heard the terms primary source and secondary source bandied about. Primary sources are those records that were created at or very near the time of the event, by someone who attended the event or had first-hand knowledge of the event. Secondary sources are records that are more removed from the event. Larry Van Horn
The news media outlets' political affiliation was determined by examining each paper's website and secondary sources that described each affiliation. Kenzie Hanson and Alexandra Lysova

Examples of secondary source in a Sentence

Recent Examples on the Web
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Véron uses official reports, secondary sources, and participant interviews to describe the negotiations leading up to this decision. Foreign Affairs, 25 Feb. 2025 Romney reads through the works of these writers and others, plus a slew of secondary sources, in the process evaluating her own reactions as a 21st-century woman. Sadie Stein, New York Times, 17 Feb. 2025

Word History

First Known Use

1864, in the meaning defined above

Time Traveler
The first known use of secondary source was in 1864

Cite this Entry

“Secondary source.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/secondary%20source. Accessed 31 Mar. 2025.

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