Word.ws English Dictionary

Plural of cornerstone

regular plural

The plural of cornerstone is cornerstones.

Forms of cornerstone

Singularcornerstone /ˈkɔː.nə.stəʊn/
Pluralcornerstones
Countablecountable

Cornerstones in a sentence

  • Jewish immigrants came together with other foreign-born groups in organizations like the Industrial Workers of the World, helping to create one of the cornerstones of the American left.2019 July 15, Greg Afinogenov, “The Jewish Case for Open Borders”, in Jewish Currents, number Summer 2019
  • Diet and exercise are cornerstones of wellness.From the entry wellness
  • Blockbusters and primetime must-sees are not cornerstones of either business, nor are they chasing ticket sales or advertising dollars.2018, Mark Sweney, “Battle rejoins between TV’s two biggest stars: Netflix and Amazon”, in Guardian. From the entry must-sees
  • It was a discussion about a significant step to end one of the cornerstones of corruption in college football: runners.Freeman, Mike (25 February 2012), “Runners' world: Union boss Smith's noble idea likely stuck at the start”, in (Please provide the book…. From the entry runner
  • The idea that the same experiments always get the same results, no matter who performs them, is one of the cornerstones of science’s claim to objective truth.2013 October 19, “Trouble at the lab”, in The Economist, volume 409, number 8858. From the entry idea

Meaning of cornerstone

  1. noun A stone forming the base at the corner of a building.
  2. noun Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
  3. noun That which is prominent, fundamental, noteworthy, or central.

Full definition of cornerstone

Questions about the plural of cornerstone

What is the plural of cornerstone?
The plural of cornerstone is cornerstones.
Is cornerstone countable?
Cornerstone is a countable noun.

Source and license

Adapted from Wiktionary: cornerstone (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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