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Noun
phenylephrine
Definition: a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion
Definition: An α-adrenergic receptor agonist related to adrenaline, used as a vasoconstrictor and nasal decongestant; 3-(1-hydroxy-2-methylamino-ethyl)phenol, with the formula C₉H₁₃NO₂.