Chrysophanic acid(Chem.), a yellow crystalline substance extracted from rhubarb, yellow dock, sienna, chrysarobin, etc., and shown to be a derivative of an anthracene. It is used in the treatment of skin diseases; — called also rhein, rheic acid, rhubarbarin, etc.

Chrysoprase
(Chrys"o*prase) n. [OE. crisopace, OF. crisoprace, F. chrysoprase, L. chrysoprasus, fr. Gr. chryso`s gold + leek.] (Min.) An apple-green variety of chalcedony, colored by nickel. It has a dull flinty luster, and is sometimes used in jewelry.

Chrysoprasus
(||Chry*sop"ra*sus) n. [L.] See Chrysoprase. Rev. xxi. 20.

Chrysosperm
(Chrys"o*sperm) n. [Gr. chryso`s gold + seed.] The seed of gold; a means of creating gold. [Obs.] B. Jonson.

Chrysotype
(Chrys"o*type) n. [Gr. chryso`s gold + -type.]

1. A photographic picture taken upon paper prepared by the use of a sensitive salt of iron and developed by the application of chloride of gold. Abney.

Chrysoberyl
(Chrys"o*ber`yl) n. [L. chrysoberyllus, Gr. chryso`s gold + beryl.] (Min.) A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a gem.

Chrysochlore
(Chrys"o*chlore) n. [Gr. chryso`s gold + chlwro`s light green: cf. F. chrysochlore.] (Zoöl.) A South African mole of the genus Chrysochloris; the golden mole, the fur of which reflects brilliant metallic hues of green and gold.

Chrysocolla
(Chrys"o*col`la) n. [L., fr. Gr. chryso`kolla gold solder; chryso`s gold + glue.] (Min.) A hydrous silicate of copper, occurring massive, of a blue or greenish blue color.

Chrysogen
(Chrys"o*gen) n. [Gr. chryso`s gold + -gen.] (Chem.) A yellow crystalline substance extracted from crude anthracene.

Chrysography
(Chry*sog"ra*phy) n. [Gr. chryso`s gold + to write.]

1. The art of writing in letters of gold.

2. A writing executed in letters of gold.

Chrysoïdine
(Chrys*o"ï*dine) n. [Gr. chryso`s gold + -oid + -ine.] (Chem.) An artificial, yellow, crystalline dye, C6H5N2.C6H3 (NH2)2. Also, one of a group of dyestuffs resembling chrysoïdine proper.

Chrysolite
(Chrys"o*lite) n. [L. chrysolithos, Gr. chryso`s gold + stone: cf. F. chrysolithe.] (Min.) A mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; — called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz.

Chrysology
(Chry*sol"o*gy) n. [Gr. chryso`s gold + -logy.] That branch of political economy which relates to the production of wealth.

Chrysopa
(||Chrys*o"pa) n. [NL., from Gr. chryso`s gold + eye, face.] (Zoöl.) A genus of neuropterous insects. See Lacewing.

Chrysophane
(Chrys"o*phane) n. [Gr. chryso`s gold + to show.] (Chem.) A glucoside extracted from rhubarb as a bitter, yellow, crystalline powder, and yielding chrysophanic acid on decomposition.

Chrysophanic
(Chrys`o*phan"ic) a. Pertaining to, or derived from, or resembling, chrysophane.


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