[ US /ˈkiˌstoʊn/ ]
[ UK /kˈiːstə‍ʊn/ ]
NOUN
  1. a central cohesive source of support and stability
    faith is his anchor
    he is the linchpin of this firm
    the keystone of campaign reform was the ban on soft money
  2. the central building block at the top of an arch or vault
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How To Use keystone In A Sentence

  • They can also question peers and learn how asking for and giving assistance to one another are keystones to academic success.
  • The windows are surmounted by rusticated wooden jack arches with superimposed keystones, and a heavy modillion cornice crowns the bold Georgian proportions of the facade.
  • In short, the monad was the keystone of Bruno's all-embracing uni - versal scheme. Dictionary of the History of Ideas
  • Li, who recently presented her results at the Keystone Symposia on Molecular and Cellular Biology in Whistler, British Columbia, Canada, will begin trials of Isorhy in rodents later this year.
  • But Pennsylvania's so critical in presidential politics, it's fitting that it be called the keystone state. CNN Transcript Oct 17, 2004
  • Naturalistic animals were carved on misericords in the early 14th century, and individualized facial features appeared on the small human heads that decorated keystones and arch mouldings.
  • An archway's most important stone is the keystone, the wedge-shaped piece of rock at its apex.
  • The three lowest horizontal bands of the lower portico's elegantly rusticated facade frame ten light and ventilation shafts for the basement, a flat keystone resting above each of the nearly square openings.
  • The windows are surmounted by rusticated wooden jack arches with superimposed keystones, and a heavy modillion cornice crowns the bold Georgian proportions of the facade.
  • The building features window keystones, coloured tiles, and heavy overhanging cornices.
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