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.
The antidiuretic hormone (ADH), also known as vasopressin, is a hormone produced by the pituitary gland in the brain. As the name suggests, the primary function of this hormone is to control the amount of urine passed out from the body by controlling the amount of water reabsorbed by the kidneys.