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secondary source
noun[ C ]
science, social science specializeduk /ˌsek.ən.dri ˈsɔːs/ us /ˌsek.ən.der.i ˈsɔːrs/
a report, book, etc. in which the writer writes about an event or period that they themselves have not experienced, using information that they have obtained from other people or documents:
Secondary sources must be tested against primary evidence.
Most journal articles are secondary sources which provide analysis, interpretation, or evaluation.
Compare
primary source tertiary source
Your dissertation must use a range of primary and secondary sources.
Modern analysis relies on secondary sources, such as written accounts.
The book mainly depends on secondary sources and published descriptive statistics.
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