a. rare. [ad. L. tenebricōs-us, f. tenebric-us dark, gloomy: see -OSE.] Full of darkness; dark, obscure; gloomy.

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1730–6.  in Bailey (folio).

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1817.  T. L. Peacock, Melincourt, xxxi. He … has taken a very opaque and tenebricose view of how much of the spheroidical perception belongs to the object.

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1851.  Martha Martell, Second Love, xxxvii. 288. I perceive that you have been blinded and deafened by the tenebricose teaching of that prelatical priest, till truth falls upon your ears like gold-dust upon the ocean.

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1902.  Ford & Banning, Flotsam, 21–2.

          The stalwart summits, crowned with light
That shone from Paradise
  When arose,
  Tenebricose,
The storms of winter skies!

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