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 injection of a drug or the implantation of a device beneath the surface of the skin is made in the loose interstitial tissues of the upper arm, the anterior surface of the thigh, or the lower portion of the abdomen. The upper back also can be used as a site of subcutaneous administration. The site of injection is usually rotated when injections are frequently given. The maximum amount of medication that can be subcutaneously injected is about 2 ml. Needles are generally 3/8 to 1 inch in length and 24 to 27 gauge.