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单词 caffeine
释义

caffeine

English

Alternative forms

  • caffein

Etymology

From French caféine,[1] from café (coffee), or German Caffein, Kaffein[2] (cp. Coffein, Koffein), from Kaffee (coffee) (cp. Kaffe, Koffee, Koffe), or Italian caffè (coffee) + -ine.

Pronunciation

  • IPA(key): /ˈkæfiːn/, /kæˈfiːn/
  • (file)
  • Rhymes: -æfiːn, -iːn

Noun

caffeine (usually uncountable, plural caffeines)

  1. An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system. [from 1830]
    Coordinate terms: guaranine, mateine, theine

Derived terms

  • apocaffeine
  • caffeine-free
  • caffeinic
  • diethoxyhydroxycaffeine
  • hydroxycaffeine
  • hypocaffeine

Translations

References

  1. caffeine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
  2. Douglas Harper (2001–2023), caffeine”, in Online Etymology Dictionary.

Further reading

  • caffeine on Wikipedia.Wikipedia

Italian

Noun

caffeine f pl

  1. plural of caffeina
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