Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun calcedony

1 sense of calcedony

Sense 1
chalcedony, calcedony -- (a milky or greyish translucent to transparent quartz)
       => quartz -- (a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities)
       => transparent gem -- (a gemstone having the property of transmitting light without serious diffusion)