Synonyms for Alpha-adrenergic Receptor (same or very similar meaning)
WordNet sense 1 (receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)):
alpha-adrenoceptor, alpha receptor
From the ODE community, based on WordNet
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