ab initio
Adverb
Meaning
at the beginning
Source: WordNetSynonyms
Antonyms
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Because of recent improvements in the accuracy of theoretical predictions based on large scale ab initio quantum mechanical calculations, meaningful comparisons between theoretical and experimental findings have become possible.
at first he didn't notice anything strange
All constants appearing in the equations must be obtained beforehand from experimental data or ab initio calculations.
Both ab initio and semi-empirical approaches involve approximations.
De novo or ab initio techniques for computational protein structure prediction are related to, but strictly distinct from experimental studies of protein folding.
Diagram illustrating various ab initio electronic structure methods in terms of energy.