The phrase "important determinant" refers to a significant factor or element that plays a crucial role in influencing a particular outcome or decision. It is a key factor that can heavily impact the result or outcome of a situation. Full definition
How bonds and stocks are doing is the single most important determinant of how well you're doing. (business.financialpost.com)
Despite well over $ 4 million being spent attempting to sway voters, it's likely that the single most important determinant of whether Democrats can cut the Republican majority to one seat will be completely out of the hands of the candidates» backers. (politico.com)
A survey by Morning Consult conducted earlier this year found that price was the single most important determinant in whether consumers buy a smart speaker. (venturebeat.com)