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.
Research from Queen Mary University of London suggests that caffeine can activate an ancient cellular energy system involved in growth, stress resistance, and DNA repair.
From Science Daily ● Sep. 9, 2026
What has been less clear is how caffeine might produce those effects inside cells.
From Science Daily ● Sep. 9, 2026
"Fortunately I've got over the caffeine withdrawals," he said.
From BBC ● Sep. 8, 2026
I had recently told Mona, my older sister, about the caffeine liaison, and I instantly had regretted it as I glanced at her text.
From Los Angeles Times ● Aug. 7, 2026
I was caffeine jittery and surly and perfectly capable of wasting his money.
From "Kindred" by Octavia Butler
