to fix (something) conclusively or authoritatively
to settle or decide (something)
You have to determine the rights and wrongs of the case
to fix (something) beforehand
to regulate (something)
Demand determines the price
in mathematics, to specify the value, position, or form of (a quantity, a point, a figure, etc)
to ascertain the intent, nature, or scope of (something)
archaic to set an end to (an estate, etc)
in law, to put or set an end to (something); to terminate (a contract, etc)
to come to a decision
He determined to ask her out
archaic in law, to come to an end or become void
determinable adj
[Middle English determinen via French from Latin determinare, from de- + terminare to limit, from terminus limit, end]