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(Agric.) Waste matter from tanks; esp., the dried nitrogenous residue from tanks in which fat has been rendered, used as a fertilizer.

A weak nitrogenous sulphur base, C6H13NS2.

A white crystalline nitrogenous substance present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, -- as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and…

Of, pertaining to, or designating, a system of organs which eliminate nitrogenous waste matter from the blood of certain invertebrates.

A complex nitrogenous substance, produced as a yellow crystalline substance, and regarded as a complex derivative of barbituric acid.

A greenish, oily, nitrogenous hydrocarbon, C12H19N7, obtained from coal tar, and probably consisting of a mixture of several metameric compounds which are higher derivatives of the base pyridine.

A white microcrystalline nitrogenous compound, C5H4O2N4, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine (in small quantities) and some urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitr…

A complex nitrogenous substance 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 nitrogenous substance of the nature of gluten, obtained from the seeds of Indian corn (Zea) as a soft, yellowish, amorphous substance. [Formerly written zeine.]