Beta

(noun) the 2nd letter of the Greek alphabet. Synonyms: beta.

(noun) beets. Synonyms: genus Beta.

(adj) second in order of importance. Synonyms: beta. Example: "The candidate, considered a beta male, was perceived to be unable to lead his party to victory."

(adj) preliminary or testing stage of a software or hardware product. Synonyms: beta. Examples: "A beta version." "Beta software."