o‧pac‧i‧ty /əʊˈpæsəti, əʊˈpæsɪti $ oʊ-/ noun [uncountable]
[Date: 1500-1600; Language: French; Origin: opacité, from Latin opacitas, from opacus; ⇒ opaque]

1. the quality that something has when it is difficult to see through ⇒ opaque

2. the quality that something has when it is difficult to understand Synonym : obscurity

[TahlilGaran] Dictionary of Contemporary English ▲