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Example sentences for "opacity"

Lexicographically close words:
oozing; oozy; opaca; opacities; opacous; opake; opal; opalescence; opalescent
  1. Twenty years ago we spoke of the opacity of lead, the transparency of flint glass, as absolute properties.

  2. Opacity and color frequently give way to a colorless transparency, and a general mobility of particles is conferred.

  3. In unfavorable cases blood vessels form and are seen to traverse the affected part from periphery to center, vision becomes entirely lost, and permanent opacity (albugo or leucoma) remains.

  4. Diffuse keratitis is characterized by an exudation into and an opacity of the cornea.

  5. Little can be accomplished towards curing this disease either in the old or young dog, as the disease, in spite of all our efforts, will run its course, and terminate in total opacity of the lens.

  6. The eyes are inflamed, and the sight is often obscured by mucus secreted from the eyelids, or by opacity of the cornea.

  7. The cornea was transparent, the iris contracted, there was no opacity of the lens, or pink tint of the retina, but a peculiar glassy appearance, as unconscious of everything around it.

  8. A pointer had suddenly considerable opacity of one eye, without any known cause: the other eye was not in the least degree affected.

  9. An opacity spreads over the cornea, and this is quickly succeeded by ulceration.

  10. Easy working, without brush marks, is a paramount virtue, regardless of the opacity or covering power of the black.

  11. This coat is rubbed with curled hair; then carmine is added to varnish, as in the first method, after which a small quantity of vermilion is put in to give the mixture opacity or covering power.

  12. In these instances the transparency is of short continuance, and the opacity is restored by returning electric matter.

  13. The materials for glass-making are opaque, and the natural opacity of their elementary atoms is unalterable.

  14. The transparency or opacity of substances (so far as light is concerned) [Page 370] does not affect the transmission of heat.

  15. Opacity of the cornea and congenital smallness of the eyes have been inherited.

  16. Fourthly, Cataract, or opacity of the crystalline lens, is commonly observed in persons whose parents have been similarly affected, and often at an earlier age in the children than in the parents.

  17. Opacity of the cornea, to a greater or less degree, always attends dilatation of its vessels.

  18. No black ring around the opacity is observed, though the pupil be dilated; and the motions of the iris are sometimes slow.

  19. Before any change can be perceived in the organ, the patient sees objects as if covered with a mist or veil; and, as the opacity becomes distinct, vision is gradually impaired.

  20. The iris swells perceptibly, and the pupil loses its dark colour, or is almost entirely closed, either from effusion of lymph, or from inflammation and consequent opacity of the crystalline lens and its capsule.

  21. In those cases where the natural pupil remains along with a still transparent lens, while vision has been destroyed by a central opacity of the cornea, the use of sharp and pointed instruments is forbidden.

  22. The abraded surface either ulcerates, or contracts and heals kindly, with or without opacity of the part.

  23. Of Cataract, or opacity of the crystalline lens and its capsule, attended with partial loss of vision.

  24. In such a case the disease is slow in its progress, and the opacity uniformly commences in the centre of the lens, and gradually extends to the circumference.

  25. In general the predominant hue is white or greyish, but not unfrequently the opacity is of several colours, and occasionally of a mottled appearance.

  26. When slow, the opacity commences in the centre of the lens, and extends gradually towards the circumference.

  27. The latter state of the lining of the lid produces disease of the cornea, opacity of a greenish colour, or an ulcer with intolerance of light, and other symptoms of disorganisation proceeding in that tissue.

  28. The lens is said frequently to regain its usual situation, a considerable time after the operation; but in many such cases, the opacity in the pupil is not occasioned by the lens, but by the capsule having become opaque.

  29. It is necessary on account of central opacity of the cornea—leucoma with entanglement of the iris—and entire closure of the pupil, or diminution of it, with concealment of the remainder by corneal opacity.

  30. The opacity in this case does not always commence in the centre, but frequently begins at the margin, and is of a spotted or mottled appearance, and in general not uniformly opaque.

  31. In the world I have not found opacity of platitude go deeper among any People.

  32. This is Difficulty First, not yet suspected by an English People, capable of great opacity on some subjects.

  33. In some cases the opacity is so great as to render detail invisible.

  34. The two warring super-dreadnaughts darted toward each other, and from the invader there flooded out the dread crimson opacity which had theretofore meant the doom of all things Solarian.

  35. Used from the earliest times to impart opacity to glazes.

  36. A silver-white metallic element, used with other oxides as a colourant or to give opacity in glazes.

  37. Defn: A white opacity in the cornea of the eye; -- called also albugo.

  38. A white spot or a slight opacity of the cornea.

  39. Defn: A very vascular superficial opacity of the cornea, usually caused by granulation of the eyelids.

  40. I am aware of no sufficient explanation of these hues of the upper clouds, nor of their strange mingling of opacity with a power of absorbing light.

  41. Semi-opacity due to crystallization may be induced in many glasses by maintaining them for a long period at a temperature just insufficient to cause fusion.

  42. If the sugar be abundant, a thick yellow opacity or deposit of yellow suboxide are produced (and this changes to a brick-red at once if the blue colour of the test remains dominant).

  43. In ophthalmia and opacity of the cornea, either alone or combined with a little citrine ointment; as a friction or dressing for scrofulous indurations and sores; in rheumatism, stiff joints, and in several skin diseases.

  44. In scrofulous ophthalmia, thickening of the conjunctiva, opacity of the cornea, &c.

  45. Milk is a true emulsion resulting from the mixture of these three ingredients, owing its opacity and white colour to the diffusion through it of that butyraceous oil.

  46. Another process has lately been practised to a considerable extent in France, though it does not afford a white lead equal in body and opacity to the products of the preceding operations.

  47. On the other hand, considerable opacity of the corneae or cases which were complicated with anterior synechia, &c.

  48. The visual power is much worse than the opacity of the cornea leads us to suppose, with visual axes deviating inwards fingers were only counted at a distance of about 1 m.

  49. It is obvious that the strength of a thin, opaque paper can be but a relative factor, while thinness and opacity are irreconcilable features.

  50. Opacity may easily be judged, although it is difficult to express it in any accurate terms, by placing the papers to be compared side by side over a printed page, the relative merits in this respect may be immediately perceived.

  51. Opacity of the cornea does, in accordance with the degree and situation of such deposit, produce corresponding deficiency of sight.

  52. Prolonged inflammation is liable to end in the production of opacity of the cornea, the surface of this membrane becoming a bluish white.

  53. The slower the plate the steeper the gradation" is almost axiomatic, and it must be recollected that only a certain amount of opacity will print if the deepest shadows only are to be kept of the greatest black obtainable in a print.

  54. Sometimes the want of opacity is due to the fact that the developer was too cold.

  55. The action of light produces what is known as a latent image or developable image, and in order to convert this into a visible image with sufficient opacity to be useful for printing purposes, it must be developed.

  56. Sometimes, when working with a diluted developer as just described, it happens that although all the necessary detail has been brought out, the image gains in opacity very slowly.

  57. For this reason it is much better to judge the opacity of negatives by artificial light than by daylight, the intensity of the latter being so variable.

  58. Provided that all the required detail is visible, small quantities of pyro solution may be added in order to gain opacity more quickly.

  59. Intensification is a process in which the opacity of the image is increased by adding some fresh matter, metallic or otherwise, to the reduced silver that constitutes the developed image.

  60. The secret of the difference lies in the greater opacity of the feathers named; they are black feathers, while those of the parrot are light-coloured.

  61. While the actual tint of the colour reflected by a black feather, then, is determined by the form and position of its angular ridges, the quality of the reflection is determined by the opacity of the substance itself.


  62. The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "opacity" in a variety of sentences. We hope that you will now be able to make sentences using this word.
    Other words:
    dark; darkness; density; dimness; dullness; dumbness; fog; hebetude; lethargy; mist; murk; mystification; obscurity; opacity; perplexity; slowness; stupidity; turbidity; vagueness