'opacity' definitions:

Definition of 'opacity'

From: WordNet
noun
The phenomenon of not permitting the passage of electromagnetic radiation [ant: transparence, transparency]
noun
Incomprehensibility resulting from obscurity of meaning [syn: opacity, opaqueness]
noun
The quality of being opaque to a degree; the degree to which something reduces the passage of light [syn: opacity, opaqueness] [ant: clarity, clearness, uncloudedness]

Synonyms of 'opacity'

From: Moby Thesaurus

Words containing 'opacity'