Nouns

(n)fusion, merger, unificationan occurrence that involves the production of a union
(n)coalition, fusionthe state of being combined into one body
(n)fusionthe merging of adjacent sounds or syllables or words
(n)fusion, nuclear fusion, nuclear fusion reactiona nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
(n)fusion, optical fusionthe combining of images from the two eyes to form a single visual percept
(n)fusion, spinal fusioncorrection of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization
(n)fusionthe act of fusing (or melting) together