alpha receptor

or alpha-re·ceptor

noun

1. a site on a cell that, upon interaction with epinephrine or norepinephrine, controls vasoconstriction, intestinal relaxation, pupil dilation, and other physiological processes.

Word History and Origins

Origin of alpha receptor¹

First recorded in 1960–65

Example Sentences

Other drugs known as fibrates, which are used to lower triglycerides and raise good cholesterol, activate the alpha receptor.

From New York Times

In the presence of estrogen, the ER alpha receptor was activated, resulting in a bright glow, but not in the presence of Dif-1.

From Scientific American