What does the word opaque mean?

Usage examples for opaque

  1. At one moment there would be an immense illumination, and the opaque cloud would become vivid gold. – Nature's Serial Story by E. P. Roe
  2. He wondered if indeed they were as opaque as they seemed, wondered with the helpless wonder of a man of exceptional mental gifts whether any of them at any stage had had such thoughts as his, had wanted as acutely as he did now to get right out of the world. – Marriage by H. G. Wells
  3. The heavy purple clouds which had arisen in the west at sunset, when all that was mortal of Lotys had been sent forth to a lonely burial in the sea, had gradually spread over the whole sky, darkening in hue as they moved, and rolling together in huge opaque masses, which presently began to close in and become denser as the night advanced. – Temporal Power by Marie Corelli
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