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alkaloid
al·ka·loid A0203800 (ăl′kə-loid′)n. Any of various organic compounds that are usually basic and contain at least one nitrogen atom in a heterocyclic ring, occurring chiefly in flowering plants. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.
[alkal(i) + -oid.]
al′ka·loi′dal (-loid′l) adj.alkaloid (ˈælkəˌlɔɪd) n (Elements & Compounds) any of a group of nitrogenous basic compounds found in plants, typically insoluble in water and physiologically active. Common examples are morphine, strychnine, quinine, nicotine, and caffeineal•ka•loid (ˈæl kəˌlɔɪd)
n. 1. any of a large class of bitter-tasting, nitrogen-containing, alkaline ring compounds common in plants and including caffeine, morphine, nicotine, quinine, and strychnine. adj. 2. resembling an alkali; alkaline. [1825–35] al`ka•loi′dal, adj. al·ka·loid (ăl′kə-loid′) Any of a large class of complex organic compounds that contain nitrogen and mostly occur in plants. Alkaloids have a wide range of physiological effects and many uses in medicine, but they can also be toxic. Morphine, quinine, and nicotine are all alkaloids.Thesaurus| Noun | 1. | alkaloid - natural bases containing nitrogen found in plantsatropine - a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticideshyoscyamine - a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tractpilocarpine - cholinergic alkaloid used in eyedrops to treat glaucomahyoscine, scopolamine - an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures; "transdermal scopolamine is used to treat motion sickness"; "someone sedated with scopolamine has difficulty lying"physostigmine - used in treatment of Alzheimer's disease and glaucomacinchonine - an alkaloid derivative of the bark of cinchona trees that is used as an antimalarial drugephedrine - white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthmaergonovine, Ergotrate Maleate - an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortionergotamine - an alkaloid derived from ergot that is less toxic than ergot; causes constriction of blood vessels and is used to treat migrainepseudoephedrine - poisonous crystalline alkaloid occurring with ephedrine and isomorphic with itnicotine - an alkaloid poison that occurs in tobacco; used in medicine and as an insecticidestrychnine - an alkaloid plant toxin extracted chiefly from nux vomica; formerly used as a stimulantbrucine - a bitter alkaloid poison resembling strychnine and extracted from nux vomicabetaine - a sweet tasting alkaloid that occurs in sugar beetsorganic compound - any compound of carbon and another element or a radicalcaffein, caffeine - a bitter alkaloid found in coffee and tea that is responsible for their stimulating effectsrauwolfia - any of several alkaloids extracted from the shrub Rauwolfia serpentinacurare, tubocurarine - a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles; "curare acts by blocking cholinergic transmission at the myoneural junction" |
Translationsalcalóideалкалоидалкалоидыalkaloid
alkaloid [al´kah-loid] one of a large group of organic, basic substances found in plants. They are usually bitter in taste and are characterized by powerful physiologic activity. Examples are morphine, cocaine, atropine, quinine, nicotine, and caffeine. The term is also applied to synthetic substances that have structures similar to plant alkaloids, such as procaine.vinca a's see vinca alkaloids.al·ka·loid (al'kă-loyd), Originally, any one of hundreds of plant and fungal products distinguished by alkaline (basic) reactions, but now restricted to heterocyclic nitrogenous and often complex structures possessing pharmacologic activity; their trivial names usually end in -ine (for example, morphine, atropine, colchicine). Alkaloids are synthesized by plants and are found in the leaf, bark, seed, or other parts, usually constituting the active principle of the crude drug; they are a loosely defined group, but may be classified according to the chemical structure of their main nucleus. For medicinal purposes, due to improved water solubility, the salts of alkaloids (for example, morphine sulfate, codeine phosphate) are usually used. see also individual alkaloid or alkaloid class. Synonym(s): vegetable basealkaloid (ăl′kə-loid′)n. Any of various organic compounds that are usually basic and contain at least one nitrogen atom in a heterocyclic ring, occurring chiefly in flowering plants. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.
al′ka·loi′dal (-loid′l) adj.alkaloid Herbal medicine
Any of a number of medicinally active compounds produced by plants; alkaloids are often active in small amounts and toxic in large amounts; well-known alkaloids produced by plants include caffeine, codeine, morphine, nicotine, quinine and strychnine.al·ka·loid (al'kă-loyd) Originally, any one of hundreds of plant products distinguished by alkaline (basic) reactions, but now restricted to heterocyclic nitrogen-containing and often complex structures possessing pharmacologic activity; their trivial names usually end in -ine (e.g., morphine, atropine, colchicine). Alkaloids are synthesized by plants and are found in the leaf, bark, seed, or other parts, usually constituting the active principle of the crude drug; they are a loosely defined group but may be classified according to the chemical structure of their main nucleus. For medicinal purposes, due to improved water solubility, the salts of alkaloids are typically used.AlkaloidA type of chemical commonly found in plants and often having medicinal properties.Mentioned in: Chemotherapyal·ka·loid (al'kă-loyd) Heterocyclic nitrogenous and often complex structures possessing pharmacologic activity; synthesized by plants and are found in the leaf, bark, seed, or other parts, usually constituting the active principle of the crude drug; they comprise a loosely defined group. alkaloid
Words related to alkaloidnoun natural bases containing nitrogen found in plantsRelated Words- atropine
- hyoscyamine
- pilocarpine
- hyoscine
- scopolamine
- physostigmine
- cinchonine
- ephedrine
- ergonovine
- Ergotrate Maleate
- ergotamine
- pseudoephedrine
- nicotine
- strychnine
- brucine
- betaine
- organic compound
- caffein
- caffeine
- rauwolfia
- curare
- tubocurarine
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