opacity : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: opacity	by the DICT Development Group
2 results for opacity
From WordNet (r) 3.0 (2006) [wn]:
opacity n the phenomenon of not permitting the passage of electromagnetic radiation Antonym(s): transparence, transparency incomprehensibility resulting from obscurity of meaning Synonym(s): opacity, opaqueness the quality of being opaque to a degree; the degree to which something reduces the passage of light Synonym(s): opacity, opaqueness Antonym(s): clarity, clearness, uncloudedness
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Opacity \Opac"ity\, n. [L. opacitas: cf.F. opacit[82].] 1. The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness. 2. Obscurity; want of clearness. --Bp. Hall.