determining
de-ter-min-ing
adjective
Having the power or function of deciding an outcome or course of action.
"This was the determining factor for success."
verb
The process of finding out or establishing something precisely or definitively.
"They are determining the exact cause of the fault."
Thesaurus
Synonyms: regulate, determine, influence, shape, mould, mold, limit, set, define, fix, specify, decide