say it: FYOO-zhuhn
fusion is a noun meaning "an occurrence that involves the production of a union". It carries 7 recorded senses.
an occurrence that involves the production of a union
the merging of adjacent sounds or syllables or words
a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
the combining of images from the two eyes to form a single visual percept
correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization
the act of fusing (or melting) together
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fusion come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.