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

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

From BBC • Mar. 3, 2026

The primary source of this added water is accelerated melting of land ice, especially from Greenland.

From Science Daily • Feb. 24, 2026

We know in 1845, potato fields — the primary source of food for the poor — became infested with a devastating fungus that destroyed 40% of the crop.

From Los Angeles Times • Jan. 24, 2026

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

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