Definition of beta-receptor
: any of a group of receptors that are present on cell surfaces of some effector organs and tissues innervated by the sympathetic nervous system and that mediate certain physiological responses (such as vasodilation, relaxation of bronchial and uterine smooth muscle, and increased heart rate) when bound by specific adrenergic agents — compare alpha-receptor
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
February 2021 Words of the Day Quiz
-
- Which is a synonym of perdure?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
February 2021 Words of the Day Quiz Take the quiz
-
More Confusing Words—Quiz
How many of these commonly confused words do you ...
Take the quiz -
How Strong Is Your Vocabulary?
Test your vocabulary with our 10-question quiz!
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share beta-receptor
Time Traveler for beta-receptor
The first known use of beta-receptor was in 1948
See more words from the same year