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caf·feine (caf·fein)
 caffeine (caffein)
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- pronunciation:
- kae
fin
- features:
- Word Combinations (noun)
| part of speech: |
noun |
| definition: |
a bitter substance that occurs naturally in coffee, tea, chocolate, and certain other substances and has stimulant and diuretic effects.
Cola drinks have a significant amount of caffeine in them.A lot of people say they need the caffeine in coffee to get them fully awake in the morning. |
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| derivation: |
caffeinic (adj.) |
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