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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.

They also note that they lacked details about several potentially important factors such as the type of coffee consumed, when it was consumed, the exact caffeine content, and whether participants drank other caffeinated beverages.

From Science Daily

During the test, for example, if a user saw a sponsored prompt that said, “What energy drink has the most caffeine?” and clicked on it, Sparky responded.

From The Wall Street Journal

Coffees made with extra ingredients like mushrooms, protein and collagen are known as "functional coffees" - which aim to provide consumers with benefits beyond the typical caffeine boost.

From BBC

“By two o’clock in the afternoon, they put me in a conference room,” says Matthews of her subsequent caffeine crash.

From The Wall Street Journal

To improve sleep quality, consistent bedtimes, limiting screen use before sleep, reducing caffeine and alcohol, and maintaining a quiet, cool environment are all advised.

From Science Daily