Definition from Wiktionary, the free dictionary
implementation (plural implementations)
- The process of moving an idea from concept to reality. In business, engineering and other fields, implementation refers to the building process rather than the design process.
- Now that the requirements are complete we can move on to implementation.
- (electronics) A result of implementing something; a finished product, system or device.
- His implementation works, but it needs some fine-tuning.
Derived terms 
process of moving an idea from concept to reality