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A device for converting energy into mechanical motion.

dental engine

A machine that rotates dental instruments.

high-speed engine

A machine that rotates a dental instrument in excess of 12,000 rpm.

ultraspeed engine

A machine that rotates a dental instrument at speeds from 100,000 to 300,000 rpm.
References in periodicals archive ?
NASA budget documents also indicate the agency is very interested in continuing the X-43 test program, which is aimed at developing an air-breathing engine capable of propelling an aircraft or spacecraft at speeds greater than 3,500 mph.
An ISRO official told Indian news agency IANS that the two air-breathing engines hugging an Advanced Technology Vehicle rocket normally start breathing air when the rocket reaches a height of 11 kilometres.
Babu (mechanical engineering, Indian Institute of Technology, Madras) presents material he developed for his graduate class on incompressible and compressible flows and air-breathing engines.