theophylline (ˌθɪəˈfɪliːn, -ɪn, θɪˈɒfɪlɪn) ![]() | |
| —n | |
| See also xanthine 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 | |
| [C19: from | |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a chattering or flighty, light-headed person. |
theophylline the·oph·yl·line (thē-ŏf'ə-lĭn, thē'ō-fĭl'ēn')
n.
A colorless crystalline alkaloid derived from tea leaves or made synthetically, used as a cardiac stimulant and diuretic.
| theophylline (thē-ŏf'ə-lĭn) Pronunciation Key
A colorless, crystalline alkaloid derived from tea leaves or made synthetically. It is used in medicine especially as a bronchial dilator. Theophylline is a xanthine that is similar in structure to caffeine and is a structural isomer of theobromine. Chemical formula: C7H8N4O2. |