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Definition of primary source noun from the Oxford Advanced Learner's Dictionary

primary source

noun
 
/ˈpraɪməri sɔːs/
 
/ˈpraɪmeri sɔːrs/
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  1. a document, etc. that contains information obtained by research or by observing somebody/something carefully, not taken from other books, etc. compare secondary source
See primary source in the Oxford Advanced American DictionarySee primary source in the Oxford Learner's Dictionary of Academic English
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Nearby words

sunflower
noun
 
 
From the Topic
Plants and trees
B2
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