ephedrine[e fe′drin; chiefly Brit, ef′ə drēn′, -drin]
an alkaloid, CHNO, derived from certain Asiatic gymnosperms (family Ephedraceae) or synthesized, and used to relieve nasal congestion and asthma and to constrict certain blood vessels
Origin of ephedrine; from Modern Latin Ephedra ; from Classical Latin ephedra, the plant horsetail ; from Classical Greek ; from ephedros, sitting by ; from epi-, on, near + hedra, a seat (see sit) + -ine
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.
Origin of ephedrineLatin ephedra, horsetail; see ephedra + –ine2.