Ab Initio
WordNet
adverb
(1) At the beginning
"At first he didn't notice anything strange"
WiktionaryText
Etymology
From + , ablative singular of .
Adverb
- Refers to the time from when a legal document comes into force.
- Refers to calculations from first principles, that is from basic laws without any further additional assumptions.
- university Refers to a course taken with no prior qualifications.