alpha blocker
or al·pha-block·er
noun Pharmacology.
any of various substances that interfere with the action of the alpha receptors.
Compare
beta blocker.
OTHER WORDS FROM alpha blocker
al·pha-block·ing, adjectiveWords nearby alpha blocker
alpes-maritimes,
alpestrine,
alpha,
alpha and omega,
alpha angle,
alpha blocker,
alpha brass,
alpha carotene,
alpha cell,
alpha centauri,
alpha centauri system
British Dictionary definitions for alpha-blocker
alpha-blocker
noun
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
Medical definitions for alpha-blocker
alpha-blocker
n.
A drug that opposes the excitatory effects of norepinephrine released from sympathetic nerve endings at alpha-adrenergic receptors and causes vasodilation and a decrease in blood pressure.
alpha-adrenergic blocking agent