chalcedony chalcedonous • chalcedonyx · · · Info · Definitions · Synonyms · Characters · · chalcedony · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a milky or greyish translucent to transparent quartz. Synonyms: calcedony. · · Noun Definition 1 Synonyms · · · calcedony · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F y latin small letter y U+0079