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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

Exxon made algae the cornerstone of its clean-energy initiatives for years and pressed on even after a lack of progress led other big oil companies to abandon similar research.

From The Wall Street Journal • Mar. 31, 2026

On Thursday, Senator Elizabeth Warren, a Democrat from Massachusetts, reintroduced the Ultra-Millionaire Tax Act, a proposal that was also a cornerstone of her 2020 presidential run.

From Barron's • Mar. 26, 2026

Throughout their undefeated Big Ten season, the Bruins’ freshmen have established themselves as a cornerstone of the team.

From Los Angeles Times • Mar. 21, 2026

Farming, the cornerstone of the complex societies in the rest of the world, was in Peru an afterthought.

From "1491" by Charles C. Mann