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barium sulfate an opaque insoluble white powder that is used as a pigment in paints and a filler for plastics and textiles, and is swallowed as a diagnostic aid in x-ray examination of the stomach and intestines.
bistre a pigment made from the soot of burned wood, having a yellowish or dark brown color. [1/2 definitions]
boneblack the carbonized residue of heat-treated bones, used as a blacking pigment or decoloring agent.
carbon paper very thin paper coated on one side with carbon or a dark waxy pigment, that is placed between two sheets of paper and produces a copy on the lower sheet of text that is written or typed on the upper.
carmine a reddish purple pigment made from cochineal. [1/2 definitions]
carotene a reddish orange hydrocarbon pigment produced in orange, yellow, and dark green plant parts, and required in human nutrition as a source of vitamin A.
chlorophyll the green pigment in the leaves and stems of plants that is necessary for the production of plant food by photosynthesis.
choroid the vascular membrane on the eye that contains pigment and lies between the sclera and the retina. [1/2 definitions]
-chrome color or coloring matter; pigment. [1/3 definitions]
chrome a pigment derived from chromium, such as chrome yellow. [1/5 definitions]
cinnabar a reddish mineral that is the main ore of mercury and is sometimes used as a pigment; mercuric sulfide. [1/2 definitions]
cobalt blue a deep blue pigment made from cobalt oxide. [1/2 definitions]
colorant something that changes the color of something else, esp. a pigment or dye.
encaustic of or concerning a type of paint in which pigment is blended with beeswax, which fuses the pigment to a surface upon heating. [1/2 definitions]
ferric oxide a red-brown solid compound in the natural form of iron ore or rust, processed for use as a pigment and in metallurgy, magnetic tapes and polishing compounds.
gamboge a brownish gum resin obtained from certain trees of southern Asia, yielding a yellow pigment that is also used as a cathartic. [1/2 definitions]
grease paint theatrical makeup that is a mixture of grease and a pigment, used by clowns, stage actors, and the like.
grease pencil a pencil made of compressed grease mixed with pigment, usu. wrapped in paper that unwinds in a spiral to expose the tip, used esp. to write on slick surfaces.
hemocyanin a bluish blood pigment that bears oxygen and contains copper, found in certain invertebrates.
India ink a black pigment made of lampblack and glue or size and shaped into cakes or sticks. [2 definitions]
lampblack a fine gray or black carbon pigment made from incompletely burned substances and used in colorings, matches, lubricants, and other products.