noun Etymology: International Scientific Vocabulary theo- (from New Latin thea tea) + phyll- + 2-ine Date: circa 1894 a feebly basic bitter crystalline compound C7H8N4O2 present in tea leaves that is isomeric with theobromine and is used in medicine especially as a bronchodilator

New Collegiate Dictionary. 2001.

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  • Theophylline — Systematic (IUPAC) name 1 …   Wikipedia

  • Theophylline — Théophylline Théophylline Général Nom IUPAC …   Wikipédia en Français

  • Théophylline — Général Nom IUPAC …   Wikipédia en Français

  • théophylline — [ teɔfilin ] n. f. • 1889; de thé et gr. phullon « feuille » ♦ Biochim. Principal alcaloïde des feuilles de thé, obtenu également par synthèse. La théophylline est un diurétique, un vasodilatateur des coronaires et un dilatateur des bronches. ●… …   Encyclopédie Universelle

  • theophylline — [thē΄ə fil′ēn΄, thē΄ə fil′in] n. [< ModL thea, tea (infl. by Gr, goddess, as being a divine herb, but < source of TEA) + PHYLL + INE3] a colorless, crystalline alkaloid, C7H8N4O2·H2O, extracted from tea leaves or prepared synthetically: an… …   English World dictionary

  • theophylline — An alkaloid found with caffeine in tea leaves (commercial t. is prepared synthetically); a smooth muscle relaxant, diuretic, cardiac stimulant, and vasodilator; used in bronchial asthma and other forms of chronic obstructive …   Medical dictionary

  • theophylline — /thee euh fil een, in/, n. Pharm. a 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,… …   Universalium

  • theophylline — n. an alkaloid, occurring in the leaves of the tea plant, that has a diuretic effect and relaxes smooth muscle, especially of the bronchi (it is an antimuscarinic drug). Theophylline preparations, particularly aminophylline, are used mainly as… …   The new mediacal dictionary

  • theophylline — teofilinas statusas T sritis chemija apibrėžtis alkaloidas formulė (CH₃)₂(O=)₂C₅H₂N₄ atitikmenys: angl. theophylline rus. теофиллин ryšiai: sinonimas – 1,3 dimetil 2,6 purindionas …   Chemijos terminų aiškinamasis žodynas

  • theophylline — (= 1,3 dimethylxanthine) Inhibits cAMP phosphodiesterase, and is often used in conjunction with exogenous dibutyryl cyclic AMP to raise cellular cAMP levels. Other, less potent, methylxanthines are caffeine, theobromine and aminophylline …   Dictionary of molecular biology

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