Definition: (adjective) Not worthy of notice.
Usage: In spite of a loud voice â€¦ and an implacable manner, he had been an undistinguished member of most of the existing aeronautical associations. Discuss
First stage in the life cycle of a computer product, followed by
pre-alpha, alpha, beta, release version, corrected release version,
upgrade, corrected upgrade, etc. Unlike its successors, the
prototype is not expected to work.