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caffeine
[ ka-feen, kaf-een, kaf-ee-in ]
noun
- Chemistry, Pharmacology. a white, crystalline, bitter alkaloid, C 8 H 10 N 4 O 2 , usually derived from coffee or tea: used in medicine chiefly as a nervous system stimulant.
- Informal. a drink, usually coffee or tea, containing this stimulant:
We sipped our caffeine on the balcony with its views of sea stacks, rocky coves, and the ever-changing ocean.
caffeine
/ ˈkæfiːn; ˈkæfɪˌiːn /
noun
- a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many tonics and analgesics. Formula: C 8 H 10 N 4 O 2 See also xanthine
caffeine
/ ă-ŧ′ /
- A bitter white alkaloid found in tea leaves, coffee beans, and various other plant parts. It is a mild stimulant. Caffeine is a xanthine and similar in structure to theobromine and theophylline. Chemical formula: C 8 H 10 N 4 O 2 .
Other 51Թ Forms
- ·ڱ· [ka-, fee, -nik, kaf-ee-, in, -ik], adjective
- ԴDz··ڱԱ noun
- non··ڱ· adjective
51Թ History and Origins
51Թ History and Origins
Origin of caffeine1
Compare Meanings
How does caffeine compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
They also suggest avoiding caffeine, alcohol or large meals before bed, doing gentle exercise and trying to make your bedroom more comfortable, where possible.
Down some decaf I actually stopped drinking caffeine — much to my chagrin — for my anxiety issue, so I’ll make myself a little pot of decaf.
She’d have to look at trigger foods and drinks for hot flashes, like alcohol and caffeine.
And because cacao has much less caffeine than coffee, fans say it gives them an energetic boost without making them jumpy.
She said through her own research she had made changes to her lifestyle to manage her condition, including cutting down her alcohol and caffeine intake as well as engaging in low-impact exercise and prioritising sleep.
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