determinant
noun
[ dɪˈtəːmɪnənt ]
• a factor which decisively affects the nature or outcome of something.
• "pure force of will was the main determinant of his success"
• a quantity obtained by the addition of products of the elements of a square matrix according to a given rule.
determinant
adjective
• serving to determine or decide something.
Origin:
early 17th century: from Latin determinant- ‘determining’, from the verb determinare (see determine).