Meaning of BETA BLOCKER

WordNet Dictionary
	Definition:		[n]  any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous system
	Websites:
	Synonyms:		beta-adrenergic blocker, beta-adrenergic blocking agent
	See Also:		acebutolol, atenolol, Blocadren, blocker, blocking agent, Brevibloc, carvedilol, Corgard, esmolol, Inderal, Lopressor, metoprolol, nadolol, pindolol, propanolol, Sectral, Tenormin, timolol, Visken
Medical Dictionary
	Definition:		an antihypertensive medication that limits the activity of epinephrine (a hormone that increases blood pressure).
Biology Dictionary
	Definition:		Any compound that blocks the activity of beta-andrenergic receptors in the sympathetic nervous system; these are often used to treat angina (chest pain) and high blood pressure.