caffeine

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caf·feine

also caf·fein  (kă-fēn′, kăf′ēn′)
n.
A bitter white alkaloid, C8H10N4O2, found in certain plants such as cacao, coffee, kola, and tea, that stimulates the central nervous system and body metabolism and is used in medicine, usually in combination with other drugs, to relieve headaches and treat respiratory conditions in premature infants.

[German Kaffein (from Kaffee, coffee) or French caféine, both from French café, coffee; see café.]

caffeine

(ˈkæfiːn; ˈkæfɪˌiːn) or

caffein

n
(Elements & Compounds) a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many tonics and analgesics. Formula: C8H10N4O2. See also xanthine2
[C19: from German Kaffein, from Kaffee coffee]

caf•feine

(kæˈfin, ˈkæf in)

n.
a white, crystalline, bitter alkaloid, C8H10N4O2, usu. derived from coffee or tea, used medicinally as a stimulant.
[1820–30; < French caféine=café coffee + -ine -ine2]
caf•fein•ic (kæˈfi nɪk, ˌkæf iˈɪn ɪk) adj.

caf·feine

(kă-fēn′)
A bitter white alkaloid found in tea, coffee, and various plants. It is a mild stimulant.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.caffeine - a bitter alkaloid found in coffee and tea that is responsible for their stimulating effectscaffeine - a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
coffee, java - a beverage consisting of an infusion of ground coffee beans; "he ordered a cup of coffee"
tea - a beverage made by steeping tea leaves in water; "iced tea is a cooling drink"
alkaloid - natural bases containing nitrogen found in plants
Translations
كَافِيـنمادَّة الكافئين في القهوه والشاي
kofein
koffein
kofeiini
kofein
koffein
kaffín
カフェイン
카페인
kofeinas
kofeīns
kofeín
koffein
สารคาเฟอีน
cafêin

caffeine

[ˈkæfiːn] ncaféine f

caffeine

caffein [ˈkæfiːn] ncaffeina

caffeine

(ˈkӕfiːn) , ((American) kӕˈfi:n) noun
a drug found in coffee and tea.

caffeine

كَافِيـن kofein koffein Koffein καφεΐνη cafeína kofeiini caféine kofein caffeina カフェイン 카페인 cafeïne koffein kofeina cafeína кофеин koffein สารคาเฟอีน kafein cafêin 咖啡因

caf·feine

n. cafeína, alcaloide presente esp. en el café y el té, estimulante y diurético.

caffeine

n cafeína
References in periodicals archive ?
However, as Tom is about to discover, there's a very good reason Mac has been behaving so erratically - Marnie and James have swapped his sleeping tablets for caffeine pills, which would make anyone edgy.
However, as Tom is about to discover, there's a reason Mac has been behaving erratically - Marnie and James swapped his sleeping tablets for caffeine pills.
Most caffeine pills contain 100-200 mg each, and while caffeine content in energy drinks and "shots" varies, some approach or slightly exceed 400 mg.
Gosselaar's appearance will include a recreation of the famous "Saved by the Bell" scene involving Jessie Spano (Elizabeth Berkley) getting caught by Zack Morris (Gosselaar) using caffeine pills.
Rabi'I 18, 1437, December 29, 2015, SPA -- Caffeine from coffee may be just as beneficial for athletes' endurance as caffeine pills, researchers found in a review of studies, according to UPI.
There's the potential that getting your caffeine by drinking coffee has similar endurance benefits as taking caffeine pills.
He advises against caffeine pills, reminding users that “there's plenty of caffeine in coffee or tea, and you get beneficial polyphenol compounds via nature's natural delivery systems.
The study, which involved 160 people between the ages of 18 and 30, showed that giving a dose of 200 mg caffeine pills (roughly equivalent to two mugs of instant coffee) enhanced their ability to distinguish between subtly different objects one day after studying them.
The more hardcore among us will use energy drinks or pop caffeine pills.