chalcedony noun.
[kal'sɛdǝni] Also
calcedony.
LME.[Latin c(h)alcedonius from Greek khalkēdōn. Cf. CASSIDONY noun1.]Mineralogy. A fine-grained fibrous variety of quartz having many precious or semiprecious forms such as agate, onyx, cornelian, and chrysoprase.
■ chalce'donic adjective E19. [TahlilGaran] English Dictionary ▲