â¢ FUSION (noun) The noun FUSION has 7 senses: 1. an occurrence that involves the production of a union. 2. a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy. 3. the state of being combined into one body. 4. the merging of adjacent sounds or syllables or words.
1 A new kind of online ad fraud â ad injection â is a growing threat for publishers and web users, ad fraud detection companies told the Wall Street Journal.  The practice goes like this: Fraudsters commandeer website visitors' browsers and fraudulently serve ads on publishers' websites.
Intraspinal Drug Infusion therapy (Implanted drug infusion therapy) is a technique that includes the permanent implantation of a pump that delivers medication at regular intervals, to a tube to painful areas of the spine. The procedure to put this system in place and then continue its use, is done in two stages.