The person in a group who displays the most experience or knowledge, especially with respect to technology.

A program or application that is not feature-complete and is not usually released to the public. Developers are usually still deciding on what features the program should have at this stage of software development. This stage comes before the alpha version, and is the first software development stage given to a program.

(computing, technology) An early version of a program or application, typically unstable, but useful to show what the product will do. Sometimes this stage is referred to as a preview version. Sometimes no more features are added after this release, but bug fixes continue. This release comes after a pre-alpha version and before a beta version. As opposed to a beta version an alpha version is usually not feature complete.

A rosy or reddish glow seen during sunset or sunrise on the summits of mountains, especially snow-covered mountains on the opposite side of the sun.

A synthetic alphabet, invented by George Bernard Shaw in an attempt to provide a phonetic orthography for the English language. Example: water in Shavian is 𐑢𐑷𐑑𐑼.

(software, testing) A process where a software application approaching full functionality is made available to a group of sophisticated users.

(physics) a radioactive substance that decays by emitting alpha particles

A stream of alpha particles.

(neurology) An electrical signal produced by the brain while the subject is relaxed.

The first and last; the beginning and end.