Beta definition

bātə, bē-
(computers) The version of a software or hardware product used in a beta test.
noun
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The second letter of the Greek alphabet.
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The second letter of the Greek alphabet (Β, β)
noun
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(comput.) A version of software distributed to selected users for testing before sale.
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A measure of a stock’s relative volatility. The Standard & Poor’s 500 Stock Index has a beta coefficient of 1. The beta of individual stocks, mutual funds, or portfolios is measured in comparison to this index. For example, a stock that has a high beta of 1.5 and thus high volatility has 50 percent more movement than the rest of the market. Although high betas can result in strong gains, they also can produce substantial losses. Similarly, stocks with a beta below 1.0 move less than the market as a whole.
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Being the second-ranked individual of one's sex. Used of social animals.

The beta male of the chimpanzee colony.

adjective
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The second of a group or series.
noun
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(astron.) The name assigned to the second brightest star in each constellation.
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An electronic system for recording and playing back videocassettes.
proper name
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A videocassette recorder using this system.
proper name
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The second item in a series or system of classification.
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(astronomy) The second brightest star in a constellation.
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A mathematical measure of the sensitivity of rates of return on a portfolio or a given stock compared with rates of return on the market as a whole. A beta of 1.0 indicates that an asset closely follows the market; a beta greater than 1.0 indicates greater volatility than the market.
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(computers) Of or relating to a beta test or the software or hardware involved in a beta test.
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Being in the second position relative to a designated carbon atom in an organic molecule at which an atom or a group may be substituted.
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Referring to the second of a group of isomers, or molecules of similar origin or properties, determined arbitrarily by those who discover or classify them. Used in combination.

Beta-estradiol.

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(finance) A measure of the impact of a change in the stock market on the probable price change of a stock or stocks.
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(chem.) Designating an organic structural position.
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Referring to a product (usually a software product) that is ready for pre-release testing by selected customers in real-world situations prior to general release. A beta product generally has completed alpha testing, which is conducted by in-house customers or under laboratory conditions. A beta product generally is considered to be stable and to include all features and functionality intended for the initial general release. See also alpha and general release.
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Identifying a molecular position in an organic chemical compound.
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Designates the second in an order of precedence.
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(computing) Preliminary; prerelease. Refers to an incomplete version of a product released for initial testing.
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(of a person, object or action) Associated with the beta male/female archetype.
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The name of the second letter of the Greek alphabet (Β, β), preceded by alpha (Α, α) and followed by gamma, (Γ, γ). In modern Greek it represents the voiced labiodental fricative sound of v found in the English words have and vase.
noun
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Used in marking scheme: α, β, γ or α+, α, α-, β etc.
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(finance) Average sensitivity of a security's price to overall securities market prices.
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(computing) The phase of development after alpha testing and before launch, in which software, while not complete, has been released to potential users for testing.
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(computing) A computer program in such phase; a preliminary version.
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(climbing) Information about a route which may aid someone in climbing it.
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(physics) A beta particle or beta ray.
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A beta fish, of the genus Betta.
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A beta male.
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(computing) To preliminarily release computer software for initial testing prior to final release.
verb
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(chiefly Internet) To beta-read a text.
verb
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pronoun
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A scientific caste of people in the novel Brave New World by Aldous Huxley.
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Other Word Forms

Noun

Singular:
beta
Plural:
betas

Origin of beta

  • Greek bēta of Phoenician origin byt in Semitic roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek βῆτα (bēta)

    From Wiktionary