| Noun | 1. | beta - the 2nd letter of the Greek alphabet | |
| 2. | Beta - beets | |
| Adj. | 1. | beta - second in order of importance; "the candidate, considered a beta male, was perceived to be unable to lead his party to victory"important, of import - of great significance or value; "important people"; "the important questions of the day" | |
| 2. | beta - preliminary or testing stage of a software or hardware product; "a beta version"; "beta software"explorative, exploratory - serving in or intended for exploration or discovery; "an exploratory operation"; "exploratory reconnaisance"; "digging an exploratory well in the Gulf of Mexico"; "exploratory talks between diplomats" | |