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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.

The consensus among scholars and practitioners in design is nearly unanimous: Usability is one of the cornerstone achievements of our society over the past century.

From Slate • Apr. 4, 2026

"It is a cornerstone of Iran's economy and a major source of revenue for the Iranian Revolutionary Guards," JP Morgan added, referring to Iran's well-resourced ideological army.

From Barron's • Mar. 27, 2026

And as a coach, he was making the long ball a cornerstone of his offenses.

From The Wall Street Journal • Mar. 20, 2026

The Raiders are trying to build something, and this Heisman winner figures to be a cornerstone.

From Los Angeles Times • Mar. 17, 2026

Dr. Gazzaley says that attention is also “absolutely critical for all high-level functioning,” a cornerstone of what it means to be human.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel