radio-opacity radio observation • radio-opaque · · · Info · Definitions · Synonyms · Characters · · radio-opacity · · Text Common · · Latin · · Scripts 13 · · Length 6 · · Syllables Definitions · · · (noun) opacity to X-rays or other radiation. Synonyms: radiopacity. · · Noun Definition 1 Synonyms · · · radiopacity · · Synonym 1 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079