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Synonyms

capstone

American  
[kap-stohn] / ˈkæpˌstoʊn /

noun

  • capstones
    plural
  1. a finishing stone of a structure.

  2. the crowning achievement, point, element, or event.


capstone British  
/ ˈkæpˌstəʊn /

noun

  1. one of a set of slabs on the top of a wall, building, etc

  2. mountaineering a chockstone occurring at the top of a gully or chimney

  3. a crowning achievement; peak

    the capstone of his career

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of capstone

1350–1400; Middle English. See cap 1, stone

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.

See Examples For:

The eight-week MIT program costs $2,847 and includes a capstone project where students create an actionable AI strategy for their company.

From MarketWatch ● Jul. 31, 2026

But however felicitously Ms. Peck gathers all her dancers into a climactic grouping, her finale is less a theatrical capstone than a busy sum of her ballet’s many parts.

From The Wall Street Journal ● May 13, 2026

"A capstone is intended to challenge students to integrate skills, function as an effective team and demonstrate their ability to solve real problems. And this problem was a doozy."

From Science Daily ● Mar. 10, 2026

"The detention of Zhang Youxia was the capstone arrest of the greatest series of purges in the history of China's PLA," experts from the Center for Strategic and International Studies wrote in a note.

From Barron's ● Mar. 3, 2026

The capstone of the Jefferson-Madison collaboration occurred at this volatile political moment—namely, their joint authorship of the Kentucky and Virginia Resolutions.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

“To see a real beach in both of those places was one of the capstones of my career,” Hartt said.

From Seattle Times ● Jul. 1, 2022

Open title nearly eight years ago may well be the capstones to his career.

From New York Times ● Feb. 23, 2017

And, each year, JDC capstones a year-round effort in the Quad-Cities to improve equality, education and a community that better serves everyone.

From Washington Times ● Aug. 15, 2016

Tom Rogers' excellent design not only evokes the monumentality of the cathedral, but also, through ropes, pulleys and capstones, shows it as a vertical building site.

From The Guardian ● Nov. 12, 2012

A short distance beyond, at the end of a water-course, is an attractive hexagonal structure with niched recesses and ornamental capstones.

From England, Picturesque and Descriptive A Reminiscence of Foreign Travel by Joel Cook

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