9 definitions found for chalcedony

Chalcedony CHALCEDONY, n. A subspecies of quartz, a mineral called also white agate, resembling milk diluted with water, and more or less clouded or opake, with veins, circles and spots. It is used in jewelry.
The varieties of chalcedony are common chalcedony, heliotrope, chrysoprase, plasma, onyx, sard and sardonyx.

chalcedony n 1: a milky or greyish translucent to transparent quartz [syn: chalcedony, calcedony]

chalcedony c.1305, from L. calcedonius, in Vulgate translating Gk. khalkedon in Rev. xxi.19, found nowhere else. Connection with Chalcedon in Asia Minor "is very doubtful" [O.E.D.].

chalcedony noun (plural -nies) Etymology: Middle English calcedonie, a precious stone, from Anglo-French, from Late Latin chalcedonius, from Greek Chalkēdōn Chalcedon Date: 13th century a translucent variety of quartz of various colors and waxy luster • chalcedonic adjective

chalcedony
n. a type of quartz occurring in several different forms, e.g. onyx, agate, tiger's eye, etc.
Derivatives:
chalcedonic adj.
Etymology: ME f. L c(h)alcedonius f. Gk khalkedon

chalcedony kælˈsedənɪ n. a type of quartz occurring in several different forms, e.g. onyx, agate, tiger's eye, etc. øøchalcedonic adj. [ME f. L c(h)alcedonius f. Gk khalkedon]

Chalcedony Chal*ced"o*ny (k[a^]l*s[e^]d"[-o]*n[y^] or k[a^]l"s[-e]*d[-o]*n[y^]; 277), n.; pl. Chalcedonies (-n[i^]z). [ L. chalcedonius, fr. Gr. CHalkhdw`n Chalcedon, a town in Asia Minor, opposite to Byzantium: cf. calc['e]doine, OE. calcidoine, casidoyne. Cf. Cassidony.] (Min.) A cryptocrystalline, translucent variety of quartz, having usually a whitish color, and a luster nearly like wax. [Written also calcedony.] Note: When chalcedony is variegated with with spots or figures, or arranged in differently colored layers, it is called agate; and if by reason of the thickness, color, and arrangement of the layers it is suitable for being carved into cameos, it is called onyx. Chrysoprase is green chalcedony; carnelian, a flesh red, and sard, a brownish red variety.

CHALCEDONY kal-sed'-o-ni, kal'-se-do-ni. See STONES, PRECIOUS.

Chalcedony Mentioned only in Rev. 21:19, as one of the precious stones in the foundation of the New Jerusalem. The name of this stone is derived from Chalcedon, where it is said to have been first discovered. In modern mineralogy this is the name of an agate-like quartz of a bluish colour. Pliny so names the Indian ruby. The mineral intended in Revelation is probably the Hebrew _nophekh_, translated "emerald" (Ex. 28:18; 39:11; Ezek. 27:16; 28:13). It is rendered "anthrax" in the LXX., and "carbunculus" in the Vulgate. (See CARBUNCLE.)