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alpha US English

The first letter of the Greek alphabet (Α, α), transliterated as ‘a.’

alpha New Oxford Dictionary for Writers & Editors

first letter of the Greek alphabet (Α, α), transliterated as ‘a’

Alpha in alpha US English

The first (typically the brightest) star in a constellation

α in alpha US English

A plane angle

alpha geek US English

A person who has great expertise in computing and related technology

alpha male US English

The dominant male animal in a particular group

alpha test US English

A trial of machinery, software, or other products carried out by a developer before a product is made available for beta testing

alpha test New Oxford Dictionary for Writers & Editors

(two words, hyphen as verb)

alpha blocker US English

Any of a class of drugs that prevent the stimulation of the adrenergic receptors responsible for increased blood pressure

alpha rhythm US English

The normal electrical activity of the brain when conscious and relaxed, consisting of oscillations (alpha waves) with a frequency of 8 to 13 hertz

alpha version US English

A version of a piece of software that is made available for testing, typically by employees of the company that is developing it, before its general release

Alpha Centauri US English

The third brightest star in the sky, in the constellation Centaurus, visible only to observers in the southern hemisphere. It is the nearest bright star to the solar system (distance 4.34 light years), and is a visual binary

alpha particle US English

A helium nucleus emitted by some radioactive substances, originally regarded as a ray

alpha radiation US English

Ionizing radiation consisting of alpha particles, emitted by some substances undergoing radioactive decay

alpha-fetoprotein US English

A protein produced by a fetus that is present in amniotic fluid and the bloodstream of the mother. Levels of the protein can be measured to detect certain congenital defects such as spina bifida and Down syndrome

alpha and omega US English

The beginning and the end (especially used by Christians as a title for Jesus)

alpha-hydroxy acid US English

An organic acid containing a hydroxyl group bonded to the carbon atom adjacent to the carboxylic acid group. A number of such compounds are used in skin-care preparations for their exfoliating properties

alpha and omega in alpha US English

The beginning and the end (especially used by Christians as a title for Jesus)

alphanumeric US English

Consisting of or using both letters and numerals

globulin US English

Any of a group of simple proteins soluble in salt solutions and forming a large fraction of blood serum protein. The three principal subsets of globulin are alpha globulin, beta globulin, and gamma globulin, which are distinguished by their respective degrees of electrophoretic mobility (alpha having the greatest and gamma having the least)

alpha waves in alpha rhythm US English

The normal electrical activity of the brain when conscious and relaxed, consisting of oscillations (alpha waves) with a frequency of 8 to 13 hertz

alpha globulin in globulin US English

Any of a group of simple proteins soluble in salt solutions and forming a large fraction of blood serum protein. The three principal subsets of globulin are alpha globulin, beta globulin, and gamma globulin, which are distinguished by their respective degrees of electrophoretic mobility (alpha having the greatest and gamma having the least)