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 (bā′tə, bē′-)
1. The second letter of the Greek alphabet. See Table at alphabet.
2. The second item in a series or system of classification.
3. 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.
4. Astronomy The second brightest star in a constellation.
5. Computers The version of a software or hardware product used in a beta test.
1. Being the second-ranked individual of one's sex. Used of social animals: the beta male of the chimpanzee colony.
2. Chemistry
a. 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.
b. 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
3. Computers Of or relating to a beta test or the software or hardware involved in a beta test.

[Greek bēta, of Phoenician origin; see byt in Semitic roots.]


1. (Letters of the Alphabet (Foreign)) the second letter in the Greek alphabet (Β, β), a consonant, transliterated as b
2. the second highest grade or mark, as in an examination
3. (General Physics) (modifier)
a. involving or relating to electrons: beta emitter.
b. relating to one of two or more allotropes or crystal structures of a solid: beta iron.
c. relating to one of two or more isomeric forms of a chemical compound
[from Greek bēta, from Hebrew; see beth]


(Astronomy) (foll by the genitive case of a specified constellation) a star in a constellation, usually the second brightest: Beta Persei.


(ˈbeɪ tə; esp. Brit. ˈbi-)

n., pl. -tas,
adj. n.
1. the second letter of the Greek alphabet (Β, ß).
2. (cap.) the second brightest star in a constellation: Beta Tauri.
3. the second of any series.
a. pertaining to one of the possible positions of an atom or group in a compound.
b. pertaining to one of two or more isomeric compounds.
[< Latin < Greek bêta < Semitic; compare Hebrew bēth]


(ˈbeɪ tə; esp. Brit. ˈbi-) Trademark.
a videocassette tape format.


A test period for new software or hardware.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta - the 2nd letter of the Greek alphabet
Greek alphabet - the alphabet used by ancient Greeks
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
2.beta - beetsBeta - beets          
caryophylloid dicot genus - genus of relatively early dicotyledonous plants including mostly flowers
beet, Beta vulgaris, common beet - biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop
Adj.1.beta - second in order of importance; "the candidate, considered a beta male, was perceived to be unable to lead his party to victory"
important, of import - of great significance or value; "important people"; "the important questions of the day"
2.beta - preliminary or testing stage of a software or hardware productbeta - preliminary or testing stage of a software or hardware product; "a beta version"; "beta software"
explorative, exploratory - serving in or intended for exploration or discovery; "an exploratory operation"; "exploratory reconnaissance"; "digging an exploratory well in the Gulf of Mexico"; "exploratory talks between diplomats"


A. Nbeta f
B. CPD beta blocker N (Med) → betabloqueador m


nBeta nt; (Brit Sch) → gut


n beta; — blocker beta-bloqueador m, beta-bloqueante m; — carotene betacaroteno; beta-hemolytic beta-hemolítico
References in periodicals archive ?
Low beta coefficients of the stocks indicate low market integration, possibility of diversification benefits and underestimated emerging country's cost of equity based on the classical CAPM model.
In stratification, beta coefficients for both X and Z are estimated separately in datasets subset by strata of S.
Tables 3 and 4 present the 60-month rolling estimated alpha and beta coefficients for the PS model using [GMM.
Table 2 presents the beta coefficients and confidence intervals (CIs) for the constant and each predictor variable.
The author chose to compare inverse wage setting elasticities, rather than Beta coefficients, for the three occupations to limit the impact of housing market shocks, which affect real estate agents more directly than the other occupations.
The beta coefficients showed the following predictive variables to be statistically significant: Nutrition ([beta]= -.
The unstandardized beta coefficients of the direct and indirect effects and the bootstrap confidence intervals are presented in the Tables 3-5.
Beta coefficients diminished 15-30% after adjustment for mercury or long-chain polyunsaturated fatty acid concentrations.
In model 0 all determinants have a significant contribution to the model with the largest beta coefficients for primiparous women (-169.
Nevertheless, to facilitate the comparison of estimates, we also report the beta coefficients of agricultural transition in all the main tables.
The path coefficients in a PLS model are similar to the standardized beta coefficients in a regression analysis [11].
556 Table 4: Beta coefficients & the meaningful levels between the components of emotional intelligence & manager's job performance Variable Meaningful level T Beta B Constant amount 0.