beta-blocker

noun
be·​ta-block·​er | \ ˈbā-tə-ˌblä-kər How to pronounce beta-blocker (audio) \

Definition of beta-blocker

: any of a class of drugs (such as propranolol) that decrease the rate and force of heart contractions and lower high blood pressure by blocking the activity of beta-receptors

Other Words from beta-blocker

beta-blocking \ ˈbā-​tə-​ˌblä-​kiŋ How to pronounce beta-blocking (audio) \ adjective

First Known Use of beta-blocker

1965, in the meaning defined above

Keep scrolling for more

Learn More about beta-blocker

Time Traveler for beta-blocker

Time Traveler

The first known use of beta-blocker was in 1965

See more words from the same year

Statistics for beta-blocker

Cite this Entry

“Beta-blocker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beta-blocker. Accessed 1 Dec. 2020.

Keep scrolling for more

More Definitions for beta-blocker

beta-blocker

noun
How to pronounce beta-blocker (audio)

English Language Learners Definition of beta-blocker

medical : a drug that helps prevent heart attacks by lowering high blood pressure

beta-blocker

noun
be·​ta-block·​er | \ -ˈbläk-ər How to pronounce beta-blocker (audio) \

Medical Definition of beta-blocker

: any of a group of drugs (as propranolol) that combine with and block the activity of a beta-receptor to decrease the heart rate and force of contractions and lower high blood pressure and that are used especially to treat hypertension, angina pectoris, and ventricular and supraventricular arrhythmias — compare alpha-blocker

More from Merriam-Webster on beta-blocker

Britannica.com: Encyclopedia article about beta-blocker

Comments on beta-blocker

What made you want to look up beta-blocker? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!