primary source
Americannoun
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.
In the fourth quintile, Social Security is no longer the primary source of income, with income from pensions and retirement savings taking over the lead.
From MarketWatch ● Sep. 2, 2026
The staffer said that examiners were no longer allowed to access the primary source level data and could only “check the checker now,” meaning they must rely on a company’s own findings.
From Salon ● Sep. 1, 2026
Nectar supplies mostly sugar, while pollen is their primary source of protein.
From Science Daily ● Aug. 19, 2026
The event formally opens the Costume Institute's spring exhibition, which serves as the department's primary source of funding and runs until January 2027.
From BBC ● May 3, 2026
The Nile River valley, with its plentiful stands of papyrus plant, was long the primary source of this material in antiquity.
From "Circumference" by Nicholas Nicastro
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
