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lead molybdate occurring in tetragonal crystals, usually tabular, and of a bright orange-yellow to red, gray, or brown color; -- also called yellow lead ore.

Tending toward a yellow color, or to one of those colors, green being excepted, in which yellow is a constituent, as scarlet, orange, etc.

me urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitric acid. Xanthine is closely related to uric acid.

related to urea and uric acid, produced as a white powder; -- so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine.

A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.

Having yellow fruit.

Having a yellowish or fair complexion; of or pertaining to the Xanthochroi.

Having a yellowish or fair complexion. -- n.

Abnormal coloration of feathers in which yellow replaces the normal color, as in certain parrots. It is commonly due to lack of the dark pigment which with yellow forms green.

Having yellow teeth.

Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic.

A skin disease marked by the development or irregular yellowish patches upon the skin, especially upon the eyelids; -- called also xanthelasma.

pertaining to the lighter division of the Melanochroi, or those races having an olive or yellow complexion and black hair.

The yellow pigment present in the inner segments of the retina in animals. See Chromophane.

A yellow coloring matter found in yellow autumn leaves, and also produced artificially from chlorophyll; -- formerly called also phylloxanthin.

Having a yellow stipe, or stem.

A yellow acid substance formed by the action of hot nitric acid on albuminous or proteid matter. It is changed to a deep orange- yellow color by the addition of ammonia.

One of three alkaloids found in the root of the yellow puccoon (Hydrastis Canadensis). It is a yellow crystalline substance, and resembles berberine.

A glucoside extracted from Persian berries as a yellow crystalline powder, used as a dyestuff.

orth America, including only the species Xanthorhiza apiifolia, which has roots of a deep yellow color; yellowroot. The bark is intensely bitter, and is sometimes used as a tonic.