(Latin: not transparent nor translucent, not clear, unable to shine through; shaded, shady; dark; no luster; not clearly understood or expressed)
The Isopaque is commonly used to show the differences between the visibility of blood vessels and the gastrointestinal tract in the body.
2. Not being difficult to understand; and so, being clear and obvious: The nonopaque language of the scientist made it possible for the non-scientific audience to understand what he was talking about.
Opacities represent the degrees to which light is obscured by pollutant particles in the air.2. Having difficulty in understanding statements, presentations, or in explaining something: Students had difficulty in understanding the opacity of the teacher's scientific presentation.
The opacities of most dictionaries simply don't give people clear or straightforward definitions.3. Etymology: "darkness, obscurity", from French opacité; from Latin opacitatem, opacitas, "shade, shadiness"; from opacus, "shaded, dark".
Certain chemical solutions are opaque to ultraviolet radiations.
There was a dust cloud of opaque pollution over Karen's city that was caused by the dust storm.2. Relating to something that is not clearly understood or expressed; not clear or lucid; obscure: Medical dictionaries too often provide the most opaque definitions of any of the other lexicons.
Despite the professor's help, the scientific presentation still seems opaque for some of his students.3. Characteristic of impervious to light; not translucent or only slightly so: The winter opaque glass blocked any possibility of looking outside Adam's windows.
4. Descriptive of not allowing light to pass through: The opaque water of the muddy river made it impossible to see anything below the surface of the water.
5. Referring to not shining, without luster, not reflecting light; or being dark or dull: The opaque paint on Kate's car would not reflect the glare from the sun even on very sunny days.
6. Pertaining to dull, stupid, or unintelligent conversations: Some of the most opaque remarks are presented by certain radio talk-show hosts.
It's amazing how some politicians can pass such opaque bills that waste so much federal money.7. Etymology: from opake which came from Latin opacus, "dark, shaded, shady" of uncertain origin. The current English spelling of opaque was influenced from about 1650 by French opaque which came from Latin.
2. Regarding something which does not allow light to pass through: The windows were painted black so they would be opaque, thus permitting the photographer to work in his photo-processing laboratory without unwanted illumination.
2. Characteristic of something self-evident; obvious; apparent: Trina's facial expression was so transparent that Susan always knew what she was thinking.
The information from the lecture was completely opaque to Ryan and so he couldn't understand a thing.
After Howard read the text book, his mind felt more translucent, as if some light on the subject was getting through and the information was beginning to make sense, but not completely.
Then, after Marla asked for an explanation, the answer suddenly became transparent.
Dust storms are common across Arizona during dry and windy conditions, and walls of dust more than a mile high can blanket an area in a matter of seconds, sometimes reducing visibility to zero or complete opaqueness.2. Incomprehensibility resulting from the obscurity or difficulty of understanding someone or something: The opaqueness of technical jargon found in most scientific dictionaries makes it very difficult for the average user to understand what is being presented.
Why must so many medical lexicons have such opaquenesses in their content?
During the procedure for obtaining X-ray pictures of the urinary system, or urography, the technique involves the introduction of a radiopaque, iodine-based dye into the kidneys, ureters, and bladder so they will show up better on X-rays.
There are roentgenopaque materials that are not penetrable by roentgen rays at the commonly used diagnostic energy procedures. Such roentgenopaque areas appear light or white on exposed films.
Some semiopaque glazes are applied to ceramics before firing so they will have a smooth lustrous surfaces and be more attractive.