beta-receptor

noun
be·​ta-re·​cep·​tor | \ ˈbā-tə-ri-ˈsep-tər How to pronounce beta-receptor (audio) \

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

First Known Use of beta-receptor

1948, in the meaning defined above

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The first known use of beta-receptor was in 1948

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Dictionary Entries Near beta-receptor

beta ray

beta-receptor

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Cite this Entry

“Beta-receptor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beta-receptor. Accessed 1 Jul. 2022.

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More Definitions for beta-receptor

beta-receptor

noun
be·​ta-re·​cep·​tor | \ -ri-ˌsep-tər \

Medical 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 (as vasodilation, relaxation of bronchial and uterine smooth muscle, and increased heart rate) when bound by specific adrenergic agents

called also beta-adrenergic receptor, beta-adrenoceptor

— compare alpha-receptor

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