ephedra

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e·phed·ra

 (ĭ-fĕd′rə, ĕf′ĭ-drə)
n.
1. Any of various usually shrubby gymnosperms of the genus Ephedra, having jointed green stems and small scalelike leaves, some species of which are used as a source of ephedrine.
2. A drug containing ephedrine derived from one of these plants, used in traditional Chinese medicine as a stimulant and decongestant and sold in the United States primarily as a dietary supplement for weight loss before it was banned because of toxic side effects in 2004. Also called ma huang.

[Latin ephedra, horsetail, from Greek ephedrā, from feminine of ephedros, sitting upon : ep-, epi-, epi- + hedrā, seat; see sed- in Indo-European roots.]

ephedra

(ɪˈfɛdrə)
n
(Plants) any gymnosperm shrub of the genus Ephedra, of warm regions of America and Eurasia: the source of ephedrine: family Ephedraceae, phylum Gnetophyta
[C18: New Latin, from Latin, from Greek ephedros a sitting upon, from epi- + hedra seat]

e•phed•ra

(ɪˈfɛd rə, ˈɛf ɪ drə)

n., pl. -ras.
any desert gymnosperm plant of the genus Ephedra, of the family Gnetaceae, with leaves reduced to scales at stem joints.
[1890–1900; < New Latin (Linnaeus) < Greek ephédra the horsetail plant, literally, sitting (upon a place)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ephedra - jointed and nearly leafless desert shrub having reduced scalelike leaves and reddish fleshy seeds
genus Ephedra - type and sole genus of Ephedraceae: tropical and subtropical evergreen shrubby or creeping plants native to dry and inhospitable regions
Ephedra sinica, mahuang - Chinese ephedra yielding ephedrine
bush, shrub - a low woody perennial plant usually having several major stems
Translations

ephedra

n (bot) efedra
References in periodicals archive ?
The formula is purposely free of caffeine, ma-huang, green tea extract and other stimulants, because those substances actually stimulate the appetite, make insulin resistance worse, and even lower metabolism over time.
Herbal stimulant - also known as Ma-huang - used in some slimming pills.
Acute hepatitis associated with the use of a Chinese herbal product, Ma-huang.