Alpha cell

alpha cell

alpha cell n.

Cells situated on the periphery of the islets of Langerhans.

Cells containing acidophil granules in the anterior lobe of the pituitary gland. Also called A cell.

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  • Alpha centauri

    Astronomy. a triple-star system that is the brightest celestial object in the constellation Centaurus. Contemporary Examples Alpha Centauri sought to write the next part of that story: the game aspired to tell “a history of the future.” Nerdiness from Noah: Alpha Centauri Noah Kristula-Green March 28, 2013 Historical Examples According to this notation, Alpha Centauri […]

  • Alpha centauri system

    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 […]

  • Alpha decay

    a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two. noun the radioactive decay process resulting in emission of alpha particles alpha decay The radioactive decay of an atomic nucleus by emission of an alpha particle (two protons bound to two neutrons). When […]

  • Alpha emitter

    noun a radioactive isotope that emits alpha particles Historical Examples One such reaction uses alpha particles emitted by polonium-210 (or some other alpha emitter) to bombard the element beryllium. The Atomic Fingerprint Bernard Keisch

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