chalcedony

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between chalcedony and monophysite

is that chalcedony is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally while monophysite is (monophysite).

As an adjective monophysite is

(monophysite).

As nouns the difference between sard and chalcedony

is that sard is (mineral) a variety of carnelian, of a rich reddish yellow or brownish red color while chalcedony is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As a verb sard

is (obsolete) to seduce (a woman).

As nouns the difference between malachite and chalcedony

is that malachite is a bright green mineral, a basic copper carbonate, Cu₂CO₃(OH)₂; one of the principal ores of copper while chalcedony is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As an adjective malachite

is from olive-taupe to that of a mild to deeply-rich -- at times seemingly translucent -- green colour, like that of the mineral which is present on oxidized copper.

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As an adjective chalcedonic is

of or pertaining to chalcedony.

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As a verb opalized is

past tense of opalize.

As an adjective opalized is

converted into a form of opal or chalcedony.

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As a verb opalize is

to convert into a form of opal or chalcedony, especially to convert wood into such a fossilized form.