alpha

Noun
  1. The 1st letter of the Greek alphabet (synset 106847188)
    is a type of: alphabetic character, letter, letter of the alphabet - the conventional characters of the alphabet used to represent speech
    belongs to: greek alphabet - the alphabet used by ancient Greeks
  2. The beginning of a series or sequence (synset 107343769)
    "the Alpha and Omega, the first and the last, the beginning and the end"
    is a type of: start - the beginning of anything
Adjective
  1. First in order of importance (synset 301279592)
    "the alpha male in the group of chimpanzees"; "the alpha star in a constellation is the brightest or main star"
    similar to: important, of import - of great significance or value
  2. Early testing stage of a software or hardware product (synset 300881125)
    "alpha version"
    similar to: explorative, exploratory - serving in or intended for exploration or discovery

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