1
[ adjective ] not clear; not transmitting or reflecting light or radiant energy

Examples

"opaque windows of the jail" "opaque to X-rays"

Used in print

(Cornell H. Mayer, "Radio Emission of the Moon...)

Piddington and Minnett explained their observations by pointing_out that rocklike materials which are likely to make_up the surface of the moon would be partially transparent to radio_waves , although opaque to infrared_radiation .

(Clement Greenberg, "Collage" in his Art and...)

Left in their previous atom-like smallness , they would have cut_away too abruptly into depth ; and the broad , opaque shapes of pasted paper would have been isolated in such a way as to make them jump_out of plane .

2
[ adjective ] not clearly understood or expressed

Synonyms

unintelligible

Related terms

incomprehensible

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