Betamax.

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.

Identifying a molecular position in an organic chemical compound. / Designates the second in an order of precedence.

(computing) To preliminarily release computer software for initial testing prior to final release. / (chiefly Internet) To beta-read a text.

simple past tense and past participle of beta

plural of beta

Third-person singular simple present indicative form of beta

present participle of beta

(physics) An energetic electron or positron produced as the result of a nuclear reaction or nuclear decay.

(computing) An early version of a program or application that contains most of the major features, but is not yet complete. Sometimes these versions are released only to a select group of people, or to the general public, for testing and feedback. This is the second major stage of development following the alpha version, and comes before the release candidate.