American Heritage® Dictionary of the English Language, Fourth Edition
- adv. From the beginning.
Century Dictionary and Cyclopedia
- n. From the beginning.
- adv. sciences Calculated from first principles, i.e. from basic laws without any further additional assumptions.
- adv. Taken with no prior qualifications.
- adv. at the beginning
- From Latin ab ("from") + initiō, ablative singular of initium ("beginning"). (Wiktionary)
- Latin ab initiō : ab, from + initiō, ablative of initium, beginning. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Apostolicae sedi et antiquis ab initio nascentis ecclesiae et catholicis traditionibus tota mentis intentione, tota cordis alacritate, me conjungo.”
“When she spoke of “adoptio” by God, or of “participatio dei,” for example, although a spiritual relationship continued to be understood, yet its basis and reality lay in a sacramental renewal of the physical nature: “Non ab initio dii facti sumus; sed primo quidem homines, tunc demum dii” (We were not made gods at first; at first we were men, thereafter we became gods at length).”
“*  Eâ gratiâ fit ab initio fidei suæ homo quicunque Christianus, quâ gratiâ homo ille ab initio factus est Christus”
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