• WordNet 3.6
    • n capstone a stone that forms the top of wall or building
    • n capstone a final touch; a crowning achievement; a culmination
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Webster's Revised Unabridged Dictionary
    • n Capstone (Paleon) A fossil echinus of the genus Cannulus; -- so called from its supposed resemblance to a cap.
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Century Dictionary and Cyclopedia
    • n capstone In architecture, the uppermost or finishing stone of a structure, as of a parapet, a turret, etc. Flat capstones, or flags, are often laid upon walls of bricks or small stones to protect the joints from infiltration of water, as well as to bind the structure together.
    • n capstone In zoöl, a fossil echinite (sea-urchin) of the genus Conulus: so named from its resemblance to a cap.
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In literature:

The idea in itself attracted him, as a fitting capstone to his resolve not to go home to supper.
"The Damnation of Theron Ware" by Harold Frederic
By our wits we can lift blocks weighing six hundred men, and set them as the capstones of our pyramids.
"The Lost Continent" by C. J. Cutcliffe Hyne
It was the capstone of all the afflictions I had ever met with; and it seemed to me that it was more than any human creature could endure.
"David Crockett: His Life and Adventures" by John S. C. Abbott
The finest bit of sculpture is on the capstone of the pyramid.
"The Grafters" by Francis Lynde
The whole is surmounted by a capstone eighteen inches high.
"Christopher Columbus and His Monument Columbia" by Various
The promontory is connected with a still bolder and loftier headland, the Capstone Rock.
"England, Picturesque and Descriptive" by Joel Cook
It was the capstone to that structure of continental embargo which for four years had occupied the attention of its author.
"The Life of Napoleon Bonaparte" by William Milligan Sloane
Banded like the walls, it rose to half their height to finish in a capstone cut square and true.
"Brood of the Dark Moon" by Charles Willard Diffin
Hawksworth noticed they were paralleling a wall of the city, a high brick barrier with iron pikes set along its capstone.
"The Moghul" by Thomas Hoover
Boy was the capstone of our married life.
"My Actor-Husband" by Anonymous

In news:

The TLA preconference that Betty Carter and I organized gave us a chance to see books from a great many publishers, including some — such as Capstone and Kids Can — who focus on series.
She is the author of the Media 21 Capstone Project to help students learn about social media and cloud computing tools for learning and as a way to build personal learning networks, which is used in the Cherokee County School District.
Capstone gives students a head start By Jennie McKeon.
Karen Berry, a parent at Capstone, was almost out of options before she found the school.
"When my son wasn't making progress in the school district, Capstone was never mentioned," she said.
A $235,000 playground is coming to the daycare center at Haywood Community College, a long-awaited capstone on a project that was heralded as a model child development center when it opened three-and-a-half years ago.
Davis ran Capstone Inc, a consulting firm, before winning his seat in Congress in 2004.
O'Neal's doctoral capstone project explored how CEOs and business leaders use humor in the workplace.
There were cracks in the Washington Monument and broken capstones at the National Cathedral.
Capstone ordered to cease operations.
The Delkor Capstone® S?-1500 Carton Closer is servo driven and equipped with recently patented Intelligent Positioning™ technology.
The Arena Stage project was a fitting cap­stone for the Meads ' decades of philanthropic work.
Received a 4 MW order for 17 Capstone microturbines – ranging from 65 kW to 1 MW – to generate prime power at nine remote LUKOIL-PERM oil fields in Russia.
Bull; USC’s Capstone is topped by a rotating restaurant —.

In science:

The problem of generation structure which is observed in low energy region seems to exhibit an important suggestion to disclose fundamental existence-form of matter. 1), 2) In investigating to that structure, neutrino problem may be situated at the capstone.
See-saw Mechanism and Possible Generation Structure
The capstone of this relationship is the Markov theorem, giving necessary and sufficient conditions for two braids to close to isotopic links.
Braid equivalences and the $L$--moves
The capstone for studying braid equivalence in all above-mentioned spaces is the following result ([LR1], Thm. 4.7).
Braid equivalences and the $L$--moves