1. Mostly working, but still under test; usually used with `in': `in beta'. In the Real World, systems (hardware or software) software often go through two stages of release testing: Alpha (in-house) and Beta (out-house?). 2. Anything that is new and experimental. 3. Flaky; dubious; suspect (since beta software is notoriously buggy).
BETA
Meaning of BETA in English
Raynet Business and Marketing English glossary. Английский глоссарий компании Raynet Business and Marketing . 2012