Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “ab initio”

ab initio

LAW from the beginning : In view of these omissions , the proceedings to recover possession fail ab initio.
→ See also void adjective
(Definition of ab initio adverb from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of ab initio

More Business English definitions for “ab initio”

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More