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Polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also crocus Martis.

That which is used to give color; a paint; a pigment; as, oil colors or water colors.

A preparation of opaque or body colors, in which the pigments are tempered or diluted with weak glue or size (cf. Tempera) instead of oil, usually for scene painting, or for walls and ceilings of rooms.

ple of regular, or weak, verbs; also, of analogous participial adjectives from nouns; as, pigmented; talented.

e tongue; -- whence the name; -- called also esmeralda. -- Emerald green, a very durable pigment, of a vivid light green color, made from the arseniate of copper; green bice; Scheele's green; -- also used adjectively; as, emerald green crystals. -- Emerald Isle, a name given to Ireland on account of the brightness of…

A yellow pigment imported from India and China. It has a strong odor, and is said to be obtained from the urine of herbivorous animals when fed on the mango. It consists if a magnesium salt of euxanthic acid. Called also puri, purree, and Indian yellow.

A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination.

. A black pigment used in copperplate printing, prepared by burning vine twigs, the lees of wine, etc. McElrath.

of a species of buckthorn (Rhamnus catharticus), which affords a saffron, green or purple pigment. -- French casement (Arch.) See French window, under Window. -- French chalk (Min.), a variety of granular talc; -- used for drawing lines on cloth, etc. See under Chalk. -- French cowslip (Bot.) The Primula Auricula. S…

A brown, nitrogenous pigment contained in the retinal epithelium; a variety of melanin.

ety of glauconite, found in cavities in amygdaloid and other eruptive rock, and used as a pigment by artists; -- called also mountain green. -- Green ebony. (a) A south American tree (Jacaranda ovalifolia), having a greenish wood, used for rulers, turned and inlaid work, and in dyeing. (b) The West Indian green ebony.…

An oyster which has the gills tinged with a green pigment, said to be due to an abnormal condition of the blood.

achinery on cambric or muslin; -- used for trimming. -- Hamburg lake, a purplish crimson pigment resembling cochineal.

A crystalline or amorphous pigment, free from iron, formed from hematin in old blood stains, and in old hemorrhages in the body. It resembles bilirubin. When present in the corpora lutea it is called hæmolutein.

One of a class of respiratory pigments, widely distributed in the animal kingdom, capable of ready oxidation and reduction.

The thickness of the layer or body of pigment applied by the painter to his canvas with especial reference to the juxtaposition of different colors and tints in forming a harmonious whole. Fairholt.

rther India; in a restricted sense, Hither India, or Hindostan. India ink, a nearly black pigment brought chiefly from China, used for water colors. It is in rolls, or in square, and consists of lampblack or ivory black and animal glue. Called also China ink. The true India ink is sepia. See Sepia. -- India matting, f…

are Indian meal, milk, and molasses. -- Indian purple. (a) A dull purple color. (b) The pigment of the same name, intensely blue and black. -- Indian red. (a) A purplish red earth or pigment composed of a silicate of iron and alumina, with magnesia. It comes from the Persian Gulf. Called also Persian red. (b) See Al…

A pigment. See India ink, under India.

Within a cell; as, the intracellular movements seen in the pigment cells, the salivary cells, and in the protoplasm of some vegetable cells.