I. ˌabə̇ˈnishēˌō, -nid.ēˌō adverb
Etymology: Latin
: from the beginning : from the instant of the act
an act outside one's legal competence is void ab initio
: at the outset (of an inquiry or investigation)
assumes ab initio that the idea is worthless
II. ˌabiˈnishēō adjective
Etymology: Latin, from the beginning
: starting from or based on first principles
predicted by ab initio calculations