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  1. Oxford Dictionary

    alpha

    • IPA[ˈalfə]

    英式

    • n.
      the first letter of the Greek alphabet (Α, α), transliterated as ‘a’.；denoting the first of a series of items or categories, e.g. forms of a chemical compound
    • symbol
      a plane angle.；angular acceleration.

    • noun: alpha, plural noun: alphas

    • 釋義
    • 相關詞
    • 片語

    名詞

    • 1. the first letter of the Greek alphabet (Α, α), transliterated as ‘a’.
    • ▪ denoting the first of a series of items or categories, e.g. forms of a chemical compound the α and β chains of haemoglobin
    • ▪ British a first-class mark given for an examination paper or piece of school or college work he had been awarded alpha double plus
    • ▪ denoting the dominant animal or human in a particular group the pack is a tightly knit, highly organized group, led by an alpha wolf
    • ▪ informal denoting a person who has a dominant role or position within a particular sphere take turns cooking for each other if one of you is too much of an alpha chef
    • ▪ short for alpha test
    • ▪ the first (typically the brightest) star in a constellation Alpha Orionis
    • ▪ relating to alpha decay or alpha particles an alpha emitter
    • 2. a code word representing the letter A, used in radio communication.

    symbol

    • 1. a plane angle.
    • 2. angular acceleration.
    • 3. right ascension.

    alpha test

    • n.
      a trial of machinery, software, or other products carried out by a developer before a product ...
    • v.
      subject (a product) to an alpha test: each model was then alpha-tested with specific test patterns

    Oxford Dictionary

    alpha test

    • n.
      a trial of machinery, software, or other products carried out by a developer before a product ...
    • v.
      subject (a product) to an alpha test: each model was then alpha-tested with specific test patterns

    Oxford American Dictionary

    alpha male

    • n.
      the dominant male animal in a particular group: two of them trotted over to greet the alpha male, a black wolf with a greying muzzle

    Oxford Dictionary

    alpha male

    • n.
      the dominant male animal in a particular group: two of them trotted over to greet the alpha male, a black wolf with a graying muzzle

    Oxford American Dictionary

    Alpha Centauri

    • ph.
      the third brightest star in the sky, in the constellation Centaurus, visible only to observers ...

    Oxford American Dictionary

    alpha-gal

    • n.
      a carbohydrate molecule present in the cell membranes of most mammals, though not those of ...

    Oxford American Dictionary

    alpha-gal

    • n.
      a carbohydrate molecule present in the cell membranes of most mammals, though not those of ...

    Oxford Dictionary

    alpha particle

    • n.
      a helium nucleus emitted by some radioactive substances, originally regarded as a ray.

    Oxford American Dictionary

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    片語

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    alpha

    • IPA[ˈalfə]

    美式

    • n.
      the first letter of the Greek alphabet (Α, α), transliterated as ‘a.’.
    • symbol
      a plane angle.

    Oxford American Dictionary