Determinism

n. doctrine which states that there is a reason for everything and all is predestined

Determinism is the philosophical proposition that every event, including human cognition and behavior, decision and action, is causally determined by an unbroken chain of prior occurrences. Determinism may also be defined as the thesis that there is at any instant exactly one physically possible future. With numerous historical debates, many varieties and philosophical positions on the subject of determinism exist from traditions throughout the world.
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Noun
1. (philosophy) a philosophical theory holding that all events are inevitable consequences of antecedent sufficient causes; often understood as denying the possibility of free will
(hypernym) philosophical doctrine, philosophical theory
(hyponym) fatalism
(classification) philosophy

(n.)
The doctrine that the will is not free, but is inevitably and invincibly determined by motives.
  

filoz. determinism