Determiner : (noun) 1: an argument that is conclusive [syn: clincher, determining
factor]
2: one of a limited class of noun modifiers that determine the
referents of noun phrases [syn: determinative]
3: a determining or causal element or factor; "education is an
important determinant of one's outlook on life" [syn: determinant,
determinative, determining factor, causal factor]
Based on WordNet 2.0
Determiner : \De*ter"min*er\, n.
One who, or that which, determines or decides.