opaque
opa·que
adjective
1.
not clear; not transmitting or reflecting light or radiant energy
- “opaque windows of the jail”
- “opaque to X-rays”
2.
not clearly understood or expressed
Origin
From Middle English opake, from Latin opacus (“shaded, shady, dark”) (of unknown origin), later reinforced from Middle French opaque. Doublet of ubac.
Phrases
- opaque box
- referentially opaque
Related words
Word family
See also
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.