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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.

Kirkland Signature energy drinks mimic Celsius’s look, flavors, and 200 milligrams of caffeine, causing Celsius shares to fall.

From The Wall Street Journal

Even so, nectar contains other compounds, such as nicotine and caffeine, that are known to influence animal behavior.

From Science Daily

It was a group powered by caffeine, Johnston said, and their coffee came in handy when they needed a liquid prop to do quick demos with the prototypes to test their absorbency.

From The Wall Street Journal

Coffee and tea contain compounds such as polyphenols and caffeine, which are thought to support brain health.

From Science Daily

“I don’t drink coffee, but I like caffeine. And I like being able to make sure it’s the same amount because I have anxiety disorder and I know how much I can handle.”

From Los Angeles Times