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Definition of alpha noun from the Oxford Advanced Learner's Dictionary

alpha

noun
 
/ˈælfə/
 
/ˈælfə/
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  1. the first letter of the Greek alphabet (A, α)
  2. (also alpha version)
     a version of a product, especially computer software, that is not yet ready for the public to buy or use, and that is tested by the company that is developing it
    3. Word Originvia Latin from Greek.
See alpha in the Oxford Advanced American Dictionary
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