Beta (noun)

1. A version of a software product that is made available for testing and feedback prior to its official release.
2. A measure of a stock's volatility in relation to the overall market.
3. A test version of a product or service.

Origin:

The word beta is derived from the greek letter "beta", which is the second letter of the greek alphabet. in english, it has been used to refer to a variety of different things, including a software release that is still being tested and refined, and a measure of a stock"s volatility.

Examples:

1. The software company is currently testing the beta version of their new program.
2. The beta of the stock indicates how volatile it is compared to the market.
3. The beta version of the app has new features that are not yet available in the stable version.
4. The beta test is the last stage of testing before the final release of the product.
5. The company launched a beta version of their new website for a select group of users to test.