ALL meanings of alpha-blocker
al·pha-block·er
A a - noun alpha-blocker any of a class of drugs that prevent the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenaline and noradrenaline and that therefore cause widening of blood vessels: used in the treatment of high blood pressure and prostatic hyperplasia 3
- noun alpha-blocker any of a class of drugs used to dilate the blood vessels by blocking the nerve impulses that normally excite the alpha receptors 3
- noun alpha-blocker An alpha-blocker is any one of a class of drugs that prevents the widening of blood vessels by preventing the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenalin and noradrenalin. Alpha-blockers are used in the treatment of high blood pressure and prostatic hyperplasia (= enlargement of the prostate). 3
- noun alpha-blocker any of various substances that interfere with the action of the alpha receptors. 1
- noun alpha-blocker (pharmacology) A drug which blocks α1-adrenergic receptors in arteries and smooth muscles. Used to treat benign prostatic hyperplasia and prostatitis and other conditions. 0