caffeine

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.

To test this, the team fed fruit flies caffeine under different conditions, including varying doses, daytime versus nighttime exposure, and combinations with sleep deprivation.

From Science Daily • Mar. 31, 2026

Even though both sexes had similar levels of caffeine in their systems, females displayed much higher levels of impulsive behavior.

From Science Daily • Mar. 31, 2026

Both brands’ 12-ounce cans carry the same 200 milligrams of caffeine, too.

From The Wall Street Journal • Mar. 25, 2026

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 • Mar. 20, 2026

“Perk—we need some caffeine and sugar. I can’t have you Eeyoring it up tomorrow at Midsummer Night, Miss Director. So we’re going to flush this whatever-it-is out of your system. Let’s go.”

From "From Twinkle, with Love" by Sandhya Menon