Synonyms for Fusion (same or very similar meaning)
WordNet sense 1 (the state of being combined into one body):
coalition
WordNet sense 2 (a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy):
nuclear fusion, nuclear fusion reaction
WordNet sense 3 (an occurrence that involves the production of a union):
merger, unification
WordNet sense 4 (the combining of images from the two eyes to form a single visual percept):
optical fusion
WordNet sense 5 (correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization):
spinal fusion
From the ODE community, based on WordNet
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