caffeine - definition in the Learner's Dictionary - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “caffeine”

See all translations

caffeine

noun [U]
 
 
/ˈkæfiːn/
a chemical in coffee, tea, etc that makes you feel more awakeSpecific types of drugDrugs - general wordsSpecific medicines and drugs
Translations of “caffeine”
in Vietnamese caphêin…
in Spanish cafeína…
in Thai สารชนิดหนึ่งพบในชาและกาแฟ…
in Malaysian kafeina…
in French caféine…
in German das Koffein…
in Chinese (Traditional) 咖啡因,咖啡鹼…
in Indonesian kafein…
in Russian кофеин…
in Turkish kafein, uyarıcı etki yapan, çay ve kahvede bulunan madde…
in Chinese (Simplified) 咖啡因,咖啡碱…
in Polish kofeina…
(Definition of caffeine from the Cambridge Learners Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Definitions of “caffeine” in other dictionaries

Word of the Day

decider

a final game or competition that allows one person or team to win, or the winning point scored

Word of the Day

She’s got very good posture. (How we stand and sit)

by Liz Walter,
May 27, 2015
Recently on this blog, we looked at the words that we use to describe the way we move. This week we’re looking at words for describing our bodies when they are still, whether we are standing or sitting. Since most of us do far too much of this, let’s start with sitting.

Read More 

ancestral health noun

May 25, 2015
diet based on the presumed diet of our Palaeolithic ancestors ‘Ancestral health,’ to use a term popular among Paleo followers, has gone mass.

Read More