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primary source

American  
[prahym-er-ee sawrs, sohrs] / ˈpraɪm ɛr i ˈsɔrs, ˈsoʊrs /

noun

  1. a first-hand or original account.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It typically remains their primary source of calories and nutrients throughout the first year.

From The Wall Street Journal • Apr. 29, 2026

“Jet-fuel cost right now is the airlines’ primary source of anxiety,” he said.

From MarketWatch • Apr. 28, 2026

However, Arm’s CPU doesn’t appear to be a direct competitor with Nvidia’s graphics-processing units, which are the primary source of revenue for the company.

From Barron's • Mar. 25, 2026

"You had listened to the most primary source you could," Sherborne said.

From BBC • Mar. 3, 2026

This was primary source material, research papers based on direct experimental data, involved theoretical constructions utilizing a complex vocabulary and containing a wealth of original ideas—and he was breaking his head on it.

From "The Chosen" by Chaim Potok

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