determinant (noun) – a factor or element that determines the nature or outcome of something
BREAKDOWN: DE- (down from) + TERMIN- (end or border) + -ANT (state or quality)
— determinant as an adjective means serving to determine, limit, or decide
— determinants are also mathematical objects used in the analysis and solution of systems of linear equations
This word is built on the root TERM-, which means end, limit, or border.
Common TERM- words include determine, determined, exterminate, term, and terminology.
More esoteric TERM- words include determinative, deterministic, predetermine, and terminus.