Fusion
Astronomy
The combining of lighter elements into heavier ones. For lighter elements (e.g., hydrogen, helium) this process releases energy. Fusion is how stars produce energy, and is being researched as a way to produce power on Earth.
- — Space Weather Center Glossary of Space Weather-Related Terms retrieved 2014-05-26
Astrophysics
When two or more nucei or baryons come together to form a heavier nucleus. This process takes a lot of energy to occur, but also releases a lot of energy after it has occured. This energy comes from the mass defect.
- — The Universe Adventure Glossary retrieved 2014-05-20
Climate Change
Fusion The phase transition of a substance passing from the solid to the liquid state; melting. In meteorology, fusion is understood to refer to the melting of ice, which, if the ice is pure and subjected to one standard atmosphere of pressure, takes place at the ice point of 0 °C or 32 °F.
Telecommunications
Synonym (in cryptosystems) linkage.