from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless crystalline alkaloid, C7H8N4O2, derived from tea leaves or made synthetically, used in medicine especially as a bronchial dilator.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Methylxanthine drug used in therapy for respiratory diseases such as COPD or asthma.
from The Century Dictionary and Cyclopedia
- n. A colorless alkaloid, contained in tea-leaves and prepared synthetically from 1-methylxanthin. It crystallizes in thin monoclinic plates or in needles, melts at 264° C, and acts on the muscles. Also called 1,3-dimethylxanthin or 1,3-dimethyl-2,6-dioxypurin.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator
theo(bromine) + phyll(o)- + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)