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Definitions

caffeine

[ka-feen, kaf-een, kaf-ee-in] / kæˈfin, ˈkæf in, ˈkæf i ɪn /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

You've probably seen caffeine eye cream everywhere - it's recommended by influencers, stacked in skincare aisles and tucked into "morning routine" videos promising instant bright eyes.

From BBC

And then she was like, 'Find some caffeine if you can.

From Barron's

The Crown star Claire Foy has said she had parasites for five years after catching an infection, and no longer drinks caffeine as a result.

From BBC

People have relied on these same compounds for generations, using them in pain relief, medical treatments, and everyday products including caffeine and nicotine.

From Science Daily

Something broke in my body when I turned 32 and my caffeine tolerance plummeted seemingly overnight.

From Salon