- opacity - the phenomenon of not permitting the passage of electromagnetic radiation
--1 is a kind of physical phenomenon
Antonyms: transparency, transparence
--1 has particulars: optical opacity; radiopacity, radio-opacity - opacity, opaqueness - incomprehensibility resulting from obscurity of meaning
--2 is a kind of incomprehensibility
- opacity, opaqueness - the quality of being opaque to a degree; the degree to which something reduces the passage of light
--3 is a kind of quality
Antonyms: clearness, clarity, uncloudedness
--3 has particulars:cloudiness, murkiness, muddiness; indistinctness, blurriness, fogginess, fuzziness