Alpha-adrenergic
of or relating to an alpha receptor.
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- Alpha-adrenergic receptor
. a site on a cell that, upon interaction with epinephrine or norepinephrine, controls vasoconstriction, intestinal relaxation, pupil dilation, and other physiological processes. alpha-adrenergic receptor n. any of various cell membrane receptors that can bind with norepinephrine and related substances that activate or block the actions of the cells containing such receptors; these cells initiate […]
- Alpha angle
alpha angle alpha angle n. the angle between the visual and the optic axes as they cross at the nodal point of the eye. the angle between the visual line and the major axis of the corneal ellipse.
- Alpha axp 21164
alpha axp 21164 processor a 1 gips version of the dec alpha processor. the first commercially available sequential 1 gips processor. announced 1994-09-7. (http://digital.com/info/semiconductor/dsc-21164.html). (1995-05-10)
- Alpha-beta brass
an alloy of from 55 to 61 percent copper with from 39 to 45 percent zinc.
- Alpha blocker
any of various substances that interfere with the action of the alpha receptors. noun any of various drugs that prevent the stimulation of alpha-adrenergic receptors that increase blood pressure usage note medicine