Good morning! Caffeine keeps you awake! It’s that zippy chemical found in coffee, tea, and sodas. In fact, it comes from the German word for “coffee.”
A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid
Noun
a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
n.
A white, bitter, crystallizable substance, obtained from
coffee. It is identical with the alkaloid theine from tea leaves, and
with guaranine from guarana.
Caffeine
A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid
Usage Examples
Couldn't start the morning without caffeine.
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Other Usage Examples