caffeine
caffeine
Definition
caf·feine (ka fēn′, kaf′ēn′)
noun
a bitter, crystalline alkaloid, CHNO, present in coffee, tea, kola nuts, etc.: it prolongs the stimulating effects of cyclic AMP on the heart and central nervous system
Etymology: Ger kaffein (now coffeïn, after ModL coffea, coffee); coined by F. F. Runge (1795-1867), Ger chemist < kaffee, coffee (< Fr café < It caffè, coffee) + -in, -ine
caffeine
Usage Examples
Converse of object
- consume: Coffee represents three-quarters of all the caffeine consumed in the USA.
- contain: A cup of regular instant coffee generally contains less caffeine than a cup of regular brewed coffee.
- avoid: Avoid too much caffeine, sugar or processed food.
- drink: I have a thing for retail therapy, for playing music and for drinking too much caffeine.
- suggest: There is much evidence to suggest that caffeine is associated with low-birth weight and related problems.
- remove: Carbon dioxide removes the caffeine without spoiling the element which gives this Colombia coffee its full, rich character.
Adjective modifier
- excess: You are also more likely to respond impulsively and intensely in stressful situations after excess caffeine.
- pure: The pure caffeine that is extracted is not wasted.
- much: Category: Tea How much caffeine does tea contain?
- less: A cup of regular instant coffee generally contains less caffeine than a cup of regular brewed coffee.
Modifies a noun
- ingestion: Sprint performance and, in particular, the 1,500 meters have responded well to caffeine ingestion.
- intake: These results contrast markedly with the results of studies on caffeine intake, where a clear dose response is demonstrated.
- addict: The main event this year was the coffee crawl - bliss for caffeine addicts.
- consumption: Coffee, tea, and caffeine consumption and incidence of colon and rectal cancer.
- addiction: Once everyone has got over their caffeine addictions, switch to espresso.
- concentration: Variable consumer preparation methods would further broaden the range of caffeine concentrations to which consumers could be exposed.
Preposition: during
- pregnancy: The use of caffeine during pregnancy has been widely studied.
Preposition: in
Browse dictionary entries near caffeine
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