Definitions for caffeinekæˈfin, ˈkæf in
Random House Webster's College Dictionary
caf•feinekæˈfin, ˈkæf in(n.)
a white, crystalline, bitter alkaloid, C8H10N4O2, usu. derived from coffee or tea, used medicinally as a stimulant.
Category: Nutrition
Origin of caffeine:
1820–30; < F caféine=cafécoffee+-ine -ine2
caf•fein•ickæˈfi nɪk, ˌkæf iˈɪn ɪk(adj.)
Princeton's WordNet
caffeine, caffein(noun)
a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
Kernerman English Learner's Dictionary
caffeine(noun)æˈfin, ˈkæf in
a stimulating ingredient in coffee and tea
Wiktionary
caffeine(Noun)
An alkaloid, CHNO, found naturally in tea and coffee plants which acts as a mild stimulant of the central nervous system.
Origin: From caféine, from café or Coffein, from Kaffee
Webster Dictionary
Caffeine(noun)
a white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana
U.S. National Library of Medicine
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.
Translations for caffeine
Kernerman English Multilingual Dictionary
caffeine(noun)
a drug found in coffee and tea.
- kafeïenAfrikaans
- مادَّة الكافئين في القهوه والشايArabic
- кофеинBulgarian
- cafeínaPortuguese (BR)
- kofeinCzech
- das KoffeinGerman
- koffeinDanish
- καφεΐνηGreek
- cafeínaSpanish
- kofeiinEstonian
- کافئینFarsi
- kofeiiniFinnish
- caféineFrench
- קָפֶאִיןHebrew
- चाय और कॉफी में पाया जाने वाला एक रसायनHindi
- kofeinCroatian
- koffeinHungarian
- kafeinIndonesian
- kaffínIcelandic
- caffeinaItalian
- カフェインJapanese
- 카페인Korean
- kofeinasLithuanian
- kofeīnsLatvian
- kafeinaMalay
- cafea aneDutch
- koffeinNorwegian
- kofeinaPolish
- کافئینPersian
- كافين، دچايو او كافىPashto
- cafeínaPortuguese
- cofeinăRomanian
- кофеинRussian
- kofeínSlovak
- kofeinSlovenian
- kofeinSerbian
- koffeinSwedish
- สารชนิดหนึ่งพบในชาและกาแฟThai
- kafeinTurkish
- 咖啡因Chinese (Trad.)
- кофеїнUkrainian
- کافی اور چائے میں پائی جانے والی نشہ آور شے۔Urdu
- caphêinVietnamese
- 咖啡因Chinese (Simp.)
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"caffeine." Definitions.net. STANDS4 LLC, 2013. Web. 21 May 2013. <http://www.definitions.net/definition/caffeine>.