Word
caffeine
Phoneticscaf·feine
US/kæˈfin/
UK/kˈæfiːn/
Definition
n. a natural substance found in coffee and tea that makes you feel more awake and energetic.
n. a bitter, white crystalline alkaloid that acts as a central nervous system stimulant. Found naturally in the seeds, leaves, and fruit of various plants, it is most commonly consumed in coffee, tea, and soft drinks.
Examples
“I try not to drink any caffeine after four in the afternoon.”
“Many people rely on a morning dose of caffeine to help them focus and feel alert during early meetings.”
“While moderate consumption of caffeine is generally considered safe, excessive intake can lead to jitteriness, increased heart rate, and disrupted sleep patterns in sensitive individuals.”
Examples
simple
“I try not to drink any caffeine after four in the afternoon.”
contextual
“Many people rely on a morning dose of caffeine to help them focus and feel alert during early meetings.”
complex
“While moderate consumption of caffeine is generally considered safe, excessive intake can lead to jitteriness, increased heart rate, and disrupted sleep patterns in sensitive individuals.”
Usage
Uncountable when referring to the substance in general; occasionally countable in informal speech when referring to a serving of a caffeinated drink.
Real-World Examples
“A medium cappuccino from Costa contains three shots of espresso, delivering a striking 325mg of caffeine, which is roughly equivalent to four cups of tea.” “Consuming up to three cups daily is generally acceptable, ideally filtered and dark-roasted if you’re looking to reduce caffeine intake, or light-roasted if you wish to reap the benefits of other compounds.” Etymology
Borrowed from French caféine, from café (“coffee”), or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) + -ine.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Scan code
englishreference.com/q/caffeine