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Definitions

cornerstone

[kawr-ner-stohn] / ˈkɔr nərˌstoʊn /


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.

Obama, who has remained active in public life since leaving office, has frequently emphasized education as a cornerstone of economic opportunity in his entire political and post-political career.

From Salon • Apr. 19, 2026

Extra virgin olive oil has long been a cornerstone of the Mediterranean diet, known for supporting heart and metabolic health.

From Science Daily • Apr. 18, 2026

“I wanted to honor the teams of curators who form the cornerstone of any institution’s vision through the exhibitions they bring to the public,” says Opie.

From Los Angeles Times • Apr. 15, 2026

Speaking to reporters from Qatar, Healey said the Gulf nations had praised the contributions of UK forces describing them as "a cornerstone" to their defence.

From BBC • Mar. 31, 2026

Along with the cornerstone, the workmen buried a time capsule in the steps of the foundation.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman




Vocabulary lists containing cornerstone