Main Entry: opaque

Pronunciation: \ō-ˈpāk\

Function: adjective

Etymology: Latin opacus

Date: 1641

1 : exhibiting opacity : blocking the passage of radiant energy and especially light
2 a : hard to understand or explain <opaque prose> b : obtuse, thickheaded

— opaque noun

— opaque·ly adverb

— opaque·ness noun