CALCEDONY

Pronunciation (US):

(GB):

 Dictionary entry overview: What does calcedony mean? 

• CALCEDONY (noun)
  The noun CALCEDONY has 1 sense:

1. a milky or greyish translucent to transparent quartz

  Familiarity information: CALCEDONY used as a noun is very rare.

 Dictionary entry details 

• CALCEDONY (noun)

Sense 1

Meaning:

A milky or greyish translucent to transparent quartz

Classified under:

Nouns denoting substances

Synonyms:

calcedony; chalcedony

Hypernyms ("calcedony" is a kind of...):

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)

Hyponyms (each of the following is a kind of "calcedony"):

agate (an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles)

bloodstone; heliotrope (green chalcedony with red spots that resemble blood)

carnelian; cornelian (a translucent red or orange variety of chalcedony)

chrysoprase (a green variety of chalcedony valued as a gemstone)

onyx (a chalcedony with alternating black and white bands; used in making cameos)

plasma (a green slightly translucent variety of chalcedony used as a gemstone)

sard; sardine; sardius (a deep orange-red variety of chalcedony)