Definition of ab initio in English:

ab initio

Line breaks: ab ini¦tio
Pronunciation: /ˌab ɪˈnɪʃɪəʊ
 
/

adverb & adjective

formal or Law
  • From the beginning: [as adverb]: the agreement should be declared void ab initio
    More example sentences
    • Enormous as the difference undoubtedly is between these faculties in the two cases, the difference is conceded not to be one existing ab initio.
    Synonyms
    from the beginning, from the start, initially, originally, from first principles, to begin with, to start with, primarily; Music da capo

Origin

Latin.

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