Look up: Caffeine

1. caffeine
   [n] - a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Caffeine
   The drug contained in coffee and tea. This is the stuff that makes coffee so addictive. It stimulates the central nervous system and, in the right amounts, causes adrenaline to be released and can enhance heart function. It helps with intellect, defends the body, and can even enhance sex! See the ca...
   Found on http://www.realcoffee.co.uk/Article.html
   
   
3. Caffeine
   Photograph of a caffeine molecular model, courtesy of Indigo® Instruments.A substance found in tea, coffee, and cola that acts as a stimulant. It is extremely soluble in supercritical fluid carbon dioxide and somewhat soluble in water; aqueous solutions of caffeine quickly break down. Symbol C₈H₁₀N₄O₂
   Found on http://www.diracdelta.co.uk/science/sour
   
   
4. caffeine
   (C₈H₁₀N₄O₂) methyltheobromine; guaranine; 1,3,7-trimethylxanthine; 1,3,7-trimethyl-2,6-dioxopurine. A substance found in tea, coffee, and cola that acts as a stimulant. It is extremely soluble in supercritical fluid carbon dioxide and somewhat soluble in ...
   Found on http://antoine.frostburg.edu/chem/senese
   
   
5. Caffeine
   Caffeine: A stimulant found naturally in coffee beans, tea leaves, cocoa beans (chocolate) and kola nuts (cola) and added to soft drinks, foods, and medicines. A cup of coffee has 100-250 milligrams of caffeine. Black tea brewed for 4 minutes has 40-100 milligrams. Green tea has one-third as much ca...
   Found on http://www.medterms.com/script/main/art.
   
   
6. caffeine
   A xanthine derivative that elevates cAMP levels in cells by inhibiting phosphodiesterases.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
7. Caffeine
   Caf·fe'ine noun [ Confer French caféine . See Coffee .] (Chemistry) A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana.
   Found on http://www.encyclo.co.uk/webster/C/5
   
   
8. caffeine
   <chemical> A xanthine derivative that elevates cAMP levels in cells by inhibiting phosphodiesterases. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
9. caffeine
   caffein noun a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
10. caffeine
    (kă-fēn´) (kaf´ēn) a xanthine compound found in coffee, tea, chocolate, and colas; it is a central nervous system stimulant, diuretic, striated muscle stimulant, and acts on the cardiovascular system. As the base or the citrate salt, it is used as a central nervous system stimulant ...
    Found on http://www.encyclo.co.uk/local/21001
    
    
11. Caffeine
    • (n.) A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana.
    Found on http://thinkexist.com/dictionary/meaning
    
    
12. caffeine
    nitrogenous organic compound of the alkaloid group, substances that have marked physiological effects. Caffeine occurs in tea, coffee, guarana, ... [9 related articles]
    Found on http://www.britannica.com/eb/a-z/c/4
    
    
13. Caffeine
    C8H10N4O2 Molar mass: 194.1906
    Found on http://www.convertunits.com/molarmass/Ca
    
    
14. Caffeine
    Caffeine (Theine or methyl-theobromine) is a white, bitter, crystalline alkaloid usually derived from coffee or tea and used in medicine as a nervous system stimulant. It was discovered in coffee by Runge in 1820, and in tea by Oudry in 1827.
    Found on http://www.probertencyclopaedia.com/brow
    
    
15. caffeine
    Type: Term Pronunciation: kaf′ēn Definitions: 1. An alkaloid obtained from the dried leaves of Thea sinensis, tea, or the dried seeds of Coffea arabica, coffee; used as a central nervous system stimulant, diuretic, circulatory and respiratory stimulant. Synonyms: guaranine, thein
    Found on http://www.medilexicon.com/medicaldictio
    
    
16. Caffeine
    A stimulating compound found in tea.
    Found on http://www.hungrymonster.com/Foodfacts/T
    
    
17. Caffeine
    An alkaloid that can be found in coffee, tea, soft drinks, chocolate, medications and a variety of other foods. Consuming large amounts of caffeine during pregnancy has been linked to birth defects in the fetus. A nursing mother should avoid or limit the amount of caffeine she consumes while breastf...
    Found on http://www.pregnology.com/AZ/C/1
    
    
18. caffeine
    caffeine (kăfēn') , odorless, slightly bitter alkaloid found in coffee, tea, kola nuts (see cola), ilex plants (the source of the Latin American drink maté), and, in small amounts, in cocoa (see cacao). It can also be prepared synthetically from uric acid. While relatively har...
    Found on http://www.infoplease.com/ce6/sci/A08097
    
    
19. caffeine
    Alkaloid organic substance found in tea, coffee, and kola nuts; it stimulates the heart and central nervous system. When isolated, it is a bitter crystalline compound, C₈H₁₀N₄O₂. Too much caffeine (more than six average-size cups of tea or coffee a d...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
20. caffeine
    A substance found in the leaves and beans of the coffee tree, in tea, yerba mate, guarana berries, and in small amounts in cocoa. It can also be made in the laboratory, and is added to some soft drinks, foods, and medicines. Caffeine increases brain activity, alertness, attention, and energy. It may...
    Found on http://www.cancer.gov/dictionary?expand=
    
    
21. Caffeine
    --> `Caffeine` is a bitter, white crystalline xanthine alkaloid and psychoactive stimulant. Caffeine was first isolated from coffee in 1820 by the German chemist Friedlieb Ferdinand Runge and in 1821 by French chemists, Robiquet as well as the team of Pelletier and Caventou, working independently. P...
    Found on http://en.wikipedia.org/wiki/Caffeine
    
    
22. Caffeine
    (film) `Caffeine` is a 2006 comedy starring Marsha Thomason, Mena Suvari, Breckin Meyer, Katherine Heigl, and Mike Vogel. It revolves around relationships of the staff and patrons of the quirky Black Cat Cafe in London one day. Rated R, for mild violence, adult language, and adu...
    Found on http://en.wikipedia.org/wiki/Caffeine