noun \me-ˈtō-prə-ˌll, -ˌlōl\

Definition of METOPROLOL

: a beta-blocker used in the form of its tartrate (C15H25NO3)2·C4H6O6 or succinate (C15H25NO3)2·C4H6O4 to treat hypertension, angina pectoris, and congestive heart failure—see lopressor, toprol

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