A member of a large group of chemicals that are made by plants and have nitrogen in them. Many alkaloids possess potent pharmacologic effects. The alkaloids include cocaine, nicotine, strychnine, caffeine, morphine, pilocarpine, atropine, methamphetamine, mescaline, ephedrine, and tryptamine.

See: Vinca alkaloid.

A member of a large group of substances found in plants and in some fungi. Alkaloids contain nitrogen and can be made in the laboratory. Nicotine, caffeine, codeine, and vincristine are alkaloids. Som [..]

A class of bitter-tasting, basic organic compounds with nitrogen-containing rings. Alkaloids often have powerful effects on living things. Examples are cocaine, nicotine, strychnine, caffeine, and mor [..]

1831, from alkali (q.v.) + -oid. "A general term applied to basic compounds of vegetable origin, bitter in taste, and having powerful effects on the animal system" [Flood]. As an adjective b [..]

A nitrogen-containing compound frequently used as a chemical defense by plants.

Caffeine (trimethylxanthine coffeine theine mateine guaranine methyltheobromine) is an alkaloid." > Caffeine (trimethylxanthine coffeine theine mateine guaranine methyltheobromine) is an alkaloid.  Icey, Wikipedia Commons Alkaloid Defini [..]

bitter plant poison (pop)

An alkaloid is a naturally occurring chemical compound that primarily contains basic nitrogen atoms. There are also some synthetic compounds that are classified as alkaloids. These compounds are gener [..]

A member of a large group of chemicals that are made by plants and have nitrogen in them. Some alkaloids have been shown to work against cancer.

[noun] Any of a class of nitrogen-containing organic compounds that come from plants and have an effect on the body. Common alkaloids include caffeine, nicotine, and codeine. Appears in modules:

(n) natural bases containing nitrogen found in plants

Chemicals that are found naturally in plants with medicinal properties.

Illustrated Glossary of Organic Chemistry Alkaloid: A natural product whose molecular structure contains one or more basic nitrogen atoms (nitrogen atoms with lone pairs not delocalized by resonance). [..]

a plant-derived compound that is biologically active, contains a nitrogen in a heterocyclic ring, is alkaline, has a complex structure, and is of limited distribution in the plant kingdom.

A member of a large group of chemicals that are made by plants and have nitrogen in them. Some alkaloids have been shown to work against cancer.

a chemical compound with a high pH; fire ant venom is composed of alkaloids and proteins; the primary alkaloid in fire ant venom is piperidine

Basic organic compounds of plant origin, containing combined nitrogen. Most alkaloids are found in plants, although some are produced by fungi and animals. They have a wide range of effects and are used as medicines and poisons. Morphine, quinine, strychnine, codeine, caffeine, cocaine and nicotine are all alkaloids. The RESFOOD project extracts al [..]

Chemicals that are made by plants, highly active, contain nitrogen atoms.  

<chemistry, pharmacology> One of a large group of nitrogenous substances found in naturally in plants. They are usually very bitter and although the plant may be poisonous, many have extracts that are pharmacologically active. Examples are atropine, caffeine, coniine, morphine, nicotine, quinine, strychnine. The term is also applied to synthe [..]

A nitrogen-containing compound frequently used as a chemical defense by plants.

(organic chemistry) Any of many organic heterocyclic bases that occur in nature and often have medicinal properties.