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1. (n.) caffeine
a white, crystalline, bitter alkaloid, C
Etymology: (1820–30; < F caféine=cafécoffee+-ine -ine2)
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| Definition of 'CAFFEINE' |
Princeton's WordNet |
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1. (noun) caffeine, caffein
a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
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1. (noun) caffeine
a stimulating ingredient in coffee and tea
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| Definition of 'CAFFEINE' |
Webster Dictionary |
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1. (noun) CAFFEINE
a white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana
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| Definition of 'CAFFEINE' |
U.S. National Library of Medicine |
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1. CAFFEINE
A methylxanthine naturally occurring in some beverages and also used as a pharmacological agent. Caffeine's most notable pharmacological effect is as a central nervous system stimulant, increasing alertness and producing agitation. It also relaxes SMOOTH MUSCLE, stimulates CARDIAC MUSCLE, stimulates DIURESIS, and appears to be useful in the treatment of some types of headache. Several cellular actions of caffeine have been observed, but it is not entirely clear how each contributes to its pharmacological profile. Among the most important are inhibition of cyclic nucleotide PHOSPHODIESTERASES, antagonism of ADENOSINE RECEPTORS, and modulation of intracellular calcium handling.
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Sense: a drug found in coffee and tea.
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 Afrikaans: kafeïen |
 Arabic: مادَّة الكافئين في القهوه |
 Bulgarian: кофеин |
 Brazilian: cafeína |
 Czech: kofein |
 German: das Koffein |
 Danish: koffein |
 Greek: καφεΐνη |
 Spanish: cafeína |
 Estonian: kofeiin |
 Farsi: کافئین |
 Finnish: kofeiini |
 French: caféine |
 Hebrew: קָפֶאִין |
 Hindi: चाय और कॉफी में पाया जाने |
 Croatian: kofein |
 Hungarian: koffein |
 Indonesian: kafein |
 Icelandic: kaffín |
 Italian: caffeina |
 Japanese: カフェイン |
 Korean: 카페인 |
 Lithuanian: kofeinas |
 Latvian: kofeīns |
 Malay: kafeina |
 Dutch: cafea ane |
 Norwegian: koffein |
 Polish: kofeina |
 Persian: کافئین |
 Pashto: كافين، دچايو او كافى |
 Portuguese: cafeína |
 Romanian: cofeină |
 Russian: кофеин |
 Slovak: kofeín |
 Slovenian: kofein |
 Serbian: kofein |
 Swedish: koffein |
 Thai: สารชนิดหนึ่งพบในชาและกาแฟ |
 Turkish: kafein |
 Taiwanese: 咖啡因 |
 Ukrainian: кофеїн |
 Urdu: کافی اور چائے میں پائی جا |
 Vietnamese: caphêin |
 Chinese: 咖啡因 |
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