from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white, odorless, powdered or crystalline alkaloid, C10H15NO, isolated from shrubs of the genus Ephedra or made synthetically. It is used in the treatment of allergies and asthma.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An alkaloid, found in some species of Ephedra shrubs (or prepared synthetically), used as a sympathomimetic drug.
from The Century Dictionary and Cyclopedia
- n. A crystalline alkaloid, C10H15ON, contained in the leaves of Ephedra distachya and other species of Ephedra. It is mydriatic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma
Latin ephedra, horsetail; see ephedra + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)