Astron. the name assigned to the second brightest star in each constellation: followed by the constellation's name in the genitive case, as Beta Geminorum
Comput. a version of software distributed to selected users for testing before sale
Finance a measure of the impact of a change in the stock market on the probable price change of a stock or stocks
adjective
Chem. designating an organic structural position
an electronic system for recording and playing back videocassettes
The second letter of the Greek alphabet. See Table at alphabet.
The second item in a series or system of classification.
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.
Physics
a. A beta particle.
b. A beta ray.
Chemistry
a. The second position from a designated carbon atom in an organic molecule at which an atom or a radical may be substituted.
b. An isomeric variation of a chemical compound. Used in combination: beta-estradiol.