primary source

American  

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

noun

1. a first-hand or original account.

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Example Sentences

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

The Section 301 probes cite unfair practices, such as trade surpluses and industrial overcapacity, with China identified as a primary source of the problem.

From The Wall Street Journal • Mar. 14, 2026

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

From BBC • Mar. 3, 2026

"Phytoplankton are the primary source of food for krill, the microscopic shrimp that are the main source of food in the Southern Ocean for virtually every animal, including penguins, seals, walruses and whales," Falkowski said.

From Science Daily • Jan. 12, 2026

But GSS’s primary source of income came from teleportation fares.

From "Ready Player One: A Novel" by Ernest Cline