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alpha test

n. (computer science) a first test of an experimental product (such as computer software) carried out by the developer

Usage examples of "alpha test".

Things were pretty good between her and Jordan during that period, and she told Jordan a couple of years later that she had an Alpha test subject she wanted socialized, and would he like to do it and incidentally provide a playmate for his own son.

I said that since Anatole's friends were going to help us alpha test Oop!