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w powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. Our orpiment and sublimed mercurie. Chaucer. Red orpiment, realgar; the red sulphide of arsenic. -- Yellow orpime…

A yellow pigment of various degrees of intensity, approaching also to red.

A pigment or coloring substance.

fully painted, so that the painter's method of work is too obvious; also, having too much pigment applied to the surface. [Cant]

ablet, with a thumb hole at one end for holding it, on which a painter lays and mixes his pigments. [Written also pallet.]

rance. Paris green. See under Green, n. -- Paris white (Chem.), purified chalk used as a pigment; whiting; Spanish white.

Any fish whose scales yield a pearl-like pigment used in manufacturing artificial pearls, as the bleak, and whitebait.

A vascular pigmented membrane projecting into the vitreous humor within the globe of the eye in birds, and in many reptiles and fishes; -- also called marsupium.

A red and purple pigment found in certain crinoids of the genus Pentacrinus.

temporary way. -- Permanent white (Chem.), barium sulphate (heavy spar), used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide.

Wine flavored with spice or honey. See Pigment, 3. [Obs.]

ineal. -- Pink saucer, a small saucer, the inner surface of which is covered with a pink pigment.

Platinum. Platina mohr, platinum black. -- Platina yellow, a pigment prepared from platinum.

A yellow pigment found in the feathers of certain parrots.

Any one of several plants yielding a red pigment which is used by the North American Indians, as the bloodroot and two species of Lithospermum (L. hirtum, and L. canescens); also, the pigment itself.

the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron.

Quercitrin, used as a pigment. See Quercitrin.

A red pigment used in marking sheep, and in some mechanical processes; ruddle. "A ruddle of rouge." Thackeray.

A red pigment.

One of the group of pigmented cells which surround the retinophoræ of invertebrates. See Illust. under Ommatidium.