What does "beta blocker" mean?

A blocking agent, one of a class of drugs used to treat hypertension and control the rate at which the heart beats.

How do you pronounce "beta blocker"?

Pronounced //ˈbeɪ.tə ˈblɔk.ɚ//.

Common synonyms include: atenolol, beta-adrenergic blocker, beta-adrenergic blocking agent, beta-blocking agent, blocadren, carvedilol.

/ˈbeɪ.tə ˈblɔk.ɚ/ noun

noun ·Rare ·Advanced level

Noun

1
A blocking agent, one of a class of drugs used to treat hypertension and control the rate at which the heart beats.
2
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 wordnet

From action of drug which blocks beta-adrenergic receptors.