depinisyon kahulugan
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doc Definition of caffeine
    English to English
  • a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
  • source: WordNet 3.0
  • A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana.
  • source: Webster 1913
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