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ma huangalso ma·huang (mä-hwäng′)
1. Any of various East Asian ephedras, especially Ephedra sinica, from which ephedrine and other alkaloids are obtained.
2. See ephedra.
[Mandarin máhuáng, from Middle Chinese ma⋮ xɦuaŋ : ma⋮, hemp + xɦuaŋ, yellow.]
(Medicine) a herbal medicine from a shrub, used as a decongestant