something that is essential, indispensable, or basic: The cornerstone of democratic government is a free press.
the chief foundation on which something is constructed or developed: The cornerstone of his argument was that all people are created equal.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cornerstone in a sentence
The bar has been a cornerstone of American culture from the very beginning.
A cornerstone of American elections has been the peaceful transition of power, but as research from the Transition Integrity Project and others underscores, there are multiple ways to contest an election.
Many of the cornerstones of the TV advertising calendar have been canceled or disrupted, and there’s nothing to fill the gap.Deep Dive: How the Summer of 2020 forced brand marketing to change for the better | jim cooper | September 14, 2020 | Digiday
GM is already building a nearly 3-million-square-foot factory that will mass produce Ultium battery cells and packs, the cornerstone of the company’s strategy to bring those electric vehicles to market in the next three years.GM shifts Corvette engineering team to its electric and autonomous vehicle programs | Kirsten Korosec | August 28, 2020 | TechCrunch
Cook has turned the app store into the cornerstone of a services division that he set out to expand four years ago.Apple CEO Tim Cook is fulfilling another Steve Jobs vision | Rachel Schallom | August 24, 2020 | Fortune
Alexander Stephens, vice president of the Confederacy, summed up the Southern attitude in his 1861 cornerstone Speech.Steve Scalise Shows There’s a Fine Line Between Confederate & Southern | Lloyd Green | January 2, 2015 | THE DAILY BEAST
The cornerstone of our democracy is that justice is to be colorblind in its administration.As Michael Brown Grand Jury Winds Down, Is Ferguson on the Brink of War? | Ron Christie | November 16, 2014 | THE DAILY BEAST
Giants are the cornerstone of the myths, legends, and traditions of almost every culture on Earth.
Back then, property was understood by universal consensus as a foundational cornerstone of human liberty and a life worth living.
The character-building cornerstone of American life has lately come under fire for ills ranging from racism to concussions.
To lose our privileges would be to lose the very cornerstone of our liberty.The Status Civilization | Robert Sheckley
The Saratoga trunk is not the best cornerstone for the home: so much we may take for granted.America To-day, Observations and Reflections | William Archer
They went as a team and gave me about as much chance to escape as if I'd been a horned toad sealed in a cornerstone.Highways in Hiding | George Oliver Smith
Pizarro was now very busy in developing the new country he had conquered, and in laying the cornerstone of a nation.The Spanish Pioneers | Charles F. Lummis
Confidence—a justified confidence—is therefore the cornerstone of morale.Manpower | Lincoln Clarke Andrews
British Dictionary definitions for cornerstone
a stone at the corner of a wall, uniting two intersecting walls; quoin
a stone placed at the corner of a building during a ceremony to mark the start of construction
a person or thing of prime importance; basis: the cornerstone of the whole argument
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012