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单词 theophylline
释义

WordReference Random House Unabridged Dictionary of American English © 2024
the•o•phyl•line  (thē′ə fil′ēn, -in),USA pronunciation n. [Pharm.]
  1. Drugsa white, crystalline, poisonous alkaloid, C7H8N4O2, an isomer of theobromine, extracted from tea leaves or produced synthetically: used to relieve bronchial spasms, in the treatment of certain heart conditions, and as a diuretic.
  • theo-, irregularly combining form representing Neo-Latin thea tea + -phyll + -ine2 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
theophylline /ˌθɪəˈfɪliːn -ɪn; θɪˈɒfɪlɪn/ n
  1. a white crystalline slightly water-soluble alkaloid that is an isomer of theobromine: it occurs in plants, such as tea, and is used to treat asthma. Formula: C7H8N4O2
Etymology: 19th Century: from theo( bromine) + phyllo- + -ine²
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更新时间：2024/9/20 23:20:48