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OPAQUE
| Pronunciation (US): |  | (GB): | |
I. (adjective)
Sense 1
Meaning:
Not transmitting or reflecting light or radiant energy; impenetrable to sight
Example:
opaque to X-rays
Classified under:
Similar:
cloudy; mirky; muddy; murky; turbid ((of liquids) clouded as with sediment)
fogged; foggy (obscured by fog)
frosted ((of glass) having a roughened coating resembling frost)
glaucous (having a frosted look from a powdery coating, as on plants)
light-tight; lightproof (not penetrable by light)
milklike; milky; whitish (resembling milk in color; not clear)
semiopaque (partially opaque)
solid (impenetrable for the eye)
Also:
unclear (not clear to the mind)
Attribute:
opacity; opaqueness (the quality of being opaque to a degree; the degree to which something reduces the passage of light)
Antonym:
clear (allowing light to pass through)
Derivation:
opacity (the quality of being opaque to a degree; the degree to which something reduces the passage of light)
opacity (the phenomenon of not permitting the passage of electromagnetic radiation)
opaqueness (the quality of being opaque to a degree; the degree to which something reduces the passage of light)
Sense 2
Meaning:
Hard or impossible to understand
Synonyms:
Classified under:
Similar:
incomprehensible; uncomprehensible (difficult to understand)
Derivation:
opacity; opaqueness (incomprehensibility resulting from obscurity of meaning)
II. (verb)
Sense 1
Present simple (first person singular and plural, second person singular and plural, third person plural) of the verb opaque
Context examples:
Like other organic iodine compounds, this agent blocks x-ray and appears opaque on x-ray film; thereby it enhances the visibility of the bile ducts and gallbladder during cholangiography and cholecystography procedures.
(Iodipamide Meglumine, NCI Thesaurus)
Like other organic iodine compounds, this agent blocks x-rays and appears opaque on x-ray film thus, enhancing the visibility of body parts containing this agent.
(Iobitridol, NCI Thesaurus)
Contrast media that has a lower amplification and intensity than the surrounding tissue making the contrast look less opaque when seen in an x-ray.
(Negative Contrast Agent, NCI Thesaurus)
Contrast agents appear opaque due to the difference in absorption of X-rays or other electromagnetic waves and surrounding tissue.
(Contrast Agent, NCI Thesaurus)
Her handler hides behind opaque one-way glass.
(The Dog's Nose Knows Malaria, Kevin Enochs/VOA)
It was a very grey day; a most opaque sky, "onding on snaw," canopied all; thence flakes felt it intervals, which settled on the hard path and on the hoary lea without melting.
(Jane Eyre, by Charlotte Brontë)
I turned back, and perceived a vast opaque body between me and the sun moving forwards towards the island: it seemed to be about two miles high, and hid the sun six or seven minutes; but I did not observe the air to be much colder, or the sky more darkened, than if I had stood under the shade of a mountain.
(Gulliver's Travels into several remote nations of the world, by Jonathan Swift)
Before, dark and opaque bodies had surrounded me, impervious to my touch or sight; but I now found that I could wander on at liberty, with no obstacles which I could not either surmount or avoid.
(Frankenstein, by Mary Wollstonecraft Shelley)
Like other organic iodine compounds, ioxaglic acid blocks x-rays and appears opaque on x-ray film, thereby enhancing the visibility of structure and organs during angiography, arteriography, arthrography, cholangiography, urography, and computed tomography (CT) scanning procedures.
(Ioxaglic Acid, NCI Thesaurus)
Like other organic iodine compounds, iothalamic acid blocks x-ray and appears opaque on x-ray film, thereby enhancing the visibility of structure and organs during angiography, arteriography, arthrography, cholangiography, and computed tomography (CT) scanning procedures.
(Iothalamic Acid, NCI Thesaurus)
