the particular version of software or hardware that is used in a beta test.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for beta version
The version of a software product that is used in the final stage of testing before it is commercially released. Testing of a beta version is generally conducted by an independent tester outside of the company developing the product.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.