You searched for: “mechanical engineering
mechanical engineering (s) (noun)
1. The branch of engineering concerned with the generation, transmission, and utilization of heat and mechanical power, and with the production and operations of tools, machinery, and their products.
2. A division of engineering concerned with the efficient design, operation, and maintenance of machines: "Mechanical engineering involves the design, the production, and the use of machinery and tools, as well as the generation and transmission of heat and mechanical power."