opaque

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“
So that space, number, continuity, and every other elementary intuition remains at bottom opaque--opaque, that is, to mathematical science; for it is no paradox, but an obvious necessity, that the data of a logical operation should not be producible by its workings.

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Definitions (20)

Toggle American Heritage definitions American Heritage Dictionary (6)

  1. adjective Impenetrable by light; neither transparent nor translucent.
  2. adjective Not reflecting light; having no luster: an opaque finish.
  3. adjective Impenetrable by a form of radiant energy other than visible light: a chemical solution opaque to x-rays.
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Toggle Century definitions Century Dictionary (9)

Toggle GNU Webster definitions GNU Webster's 1913 (3)

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Examples

  • Day Four KIRK HAD BEEN tOO preoccupied the night before to turn the large windows in his bedroom opaque, and the morning sun flooded in and woke him up much too early. —  The Fearful Summons
  • The River Tagus lapped vast and opaque, and at night you watched semi-trucks and buses cross the Vasco de Gama Bridge. —  Ellery Queen Mystery Magazine
  • So that space, number, continuity, and every other elementary intuition remains at bottom opaque--opaque, that is, to mathematical science; for it is no paradox, but an obvious necessity, that the data of a logical operation should not be producible by its workings. —  The Life of Reason
  • So that space, number, continuity, and every other elementary intuition remains at bottom opaque -- opaque, that is, to mathematical science; for it is no paradox, but an obvious necessity, that the data of a logical operation should not be producible by its workings. —  The Life of Reason
  • It is opaque, and many pieces are mottled. —  The Lore of Gloranthan Gems and Near-Gems by Martin R. Crim Part II
 

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Etymologies (3)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Middle English opake, shady, and French opaque, opaque (from Old French, shady), both from Latin opācus.

Toggle Century etymologies Century Dictionary (2)

  1. Formerly also opake; from Middle English opake, from Old French (and F.) opaque = Spanish Portuguese Italian opaco, from Latin opacus, shaded, shady, darkened, obscure, such as to give or cast a shadow.
  2. from opaque, adjective
 

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/əˈpeɪk/
by American Heritage

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