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

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

The two primary sources of worries come from AI start-ups OpenAI and Anthropic, especially the latter.

From Barron's

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

From BBC

Altogether, tipping in the U.S. generates more than $50 billion annually and serves as a primary source of income for millions of workers.

From Science Daily