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Limonite :: Limonite (n.) Hydrous sesquioxide of iron, an important ore of iron, occurring in stalactitic, mammillary, or earthy forms, of a dark brown color, and yellowish brown powder. It includes bog iron. Also called brown hematite..

Ergotine :: Ergotine () A powerful astringent alkaloid extracted from ergot as a brown, amorphous, bitter substance. It is used to produce contraction of the uterus..

Seal-brown :: Seal-brown (a.) Of a rich dark brown color, like the fur of the fur seal after it is dyed..

Pyrochlore :: Pyrochlore (n.) A niobate of calcium, cerium, and other bases, occurring usually in octahedrons of a yellowish or brownish color and resinous luster; -- so called from its becoming grass-green on being subjected to heat under the blowpipe..

V Moth :: V moth () A common gray European moth (Halia vauaria) having a V-shaped spot of dark brown on each of the fore wings.

Braunite :: Braunite (n.) A native oxide of manganese, of dark brownish black color. It was named from a Mr. Braun of Gotha..

Siderite :: Siderite (n.) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron, spathic iron..

Satyr :: Satyr (n.) Any one of many species of butterflies belonging to the family Nymphalidae. Their colors are commonly brown and gray, often with ocelli on the wings. Called also meadow browns..

Umber :: Umber (n.) An African wading bird (Scopus umbretta) allied to the storks and herons. It is dull dusky brown, and has a large occipital crest. Called also umbrette, umbre, and umber bird..

Lurid :: Lurid (a.) Having a brown color tonged with red, as of flame seen through smoke..

Hemin :: Hemin (n.) A substance, in the form of reddish brown, microscopic, prismatic crystals, formed from dried blood by the action of strong acetic acid and common salt; -- called also Teichmann's crystals. Chemically, it is a hydrochloride of hematin..

Linnet :: Linnet (n.) Any one of several species of fringilline birds of the genera Linota, Acanthis, and allied genera, esp. the common European species (L. cannabina), which, in full summer plumage, is chestnut brown above, with the breast more or less crimson. The feathers of its head are grayish brown, tipped with crimson. Called also gray linnet, red linnet, rose linnet, brown linnet, lintie, lintwhite, gorse thatcher, linnet finch, and greater redpoll. The American redpoll linnet (Acanthis linaria)

Cologne Earth :: Cologne earth () An earth of a deep brown color, containing more vegetable than mineral matter; an earthy variety of lignite, or brown coal..

Bovey Coal :: Bovey coal () A kind of mineral coal, or brown lignite, burning with a weak flame, and generally a disagreeable odor; -- found at Bovey Tracey, Devonshire, England. It is of geological age of the oolite, and not of the true coal era..

Paracyanogen :: Paracyanogen (n.) A polymeric modification of cyanogen, obtained as a brown or black amorphous residue by heating mercuric cyanide..

Hennotannic :: Hennotannic (a.) Pertaining to, or designating, a brown resinous substance resembling tannin, and extracted from the henna plant; as, hennotannic acid..

Petroleum :: Petroleum (n.) Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composition, and properties. It is refined by distillation, and the products include kerosene, benzine, gasoline, paraffin, etc..

Topaz :: Topaz (n.) A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem..

Cairngormstone :: Cairngormstone () A yellow or smoky brown variety of rock crystal, or crystallized quartz, found esp, in the mountain of Cairngorm, in Scotland..

Phycophaeine :: Phycophaeine (n.) A brown coloring matter found in certain algae.

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