Crossword Genius

Testing phase (4)

Ross

I believe the answer is:

beta

'testing phase' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for beta that I've seen before include "Second-class" , "Old character" , "Character between alpha and gamma" , "In a constellation, a star second in brightness" , "less than perfect mark" .)

I've seen this clue in the Universal.
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