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
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any alloy of copper and zinc, a h-m-geneous solid solution containing more than 64 percent copper.
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alpha carotene alpha carotene n. an isomer of carotene.
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noun a star system comprising the binary star alpha centauri a and b and proxima centauri (also called alpha centauri c), which is 0.1 light years closer to the sun. visual magnitude: 0.01 (a), 1.33 (b); spectral type: g2v (a); distance from earth: 4.3 light years also called rigil kent see also proxima
- Alpha conversion
alpha conversion theory in lambda-calculus and reduction, the renaming of a formal parameter in a lambda abstraction. this does not change the meaning of the abstraction. for example: \ x . x+1 \ y . y+1 if the actual argument to a lambda abstraction contains instances of the abstraction’s formal parameter then it is necessary […]