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n. [ L. ] 1. One who, or that which, generates, begets, causes, or produces. [ 1913 Webster ]

2. An apparatus in which vapor or gas is formed from a liquid or solid by means of heat or chemical process, as a steam boiler, gas retort, or vessel for generating carbonic acid gas, etc. [ 1913 Webster ]

3. (Mus.) The principal sound or sounds by which others are produced; the fundamental note or root of the common chord; -- called also generating tone. [ 1913 Webster ]

4. (Elec.) Any machine that transforms mechanical into electrical energy; a dynamo. [ Webster 1913 Suppl. ]

5. (Math.) a mathematical entity which, when subjected to an operation, yields another mathematical entity; also, a generatrix. [ PJC ]

. A machine built as an induction motor and driven above synchronous speed, thus acting as an alternating-current generator; -- called also asynchronous generator. Below synchronism the machine takes in electrical energy and acts as an induction motor; at synchronism the power component of current becomes zero and changes sign, so that above synchronism the machine (driven for this purpose by mechanical power) gives out electrical energy as a generator. [ Webster 1913 Suppl. ]

. The combination consisting of a generator and a driving motor mechanically connected, usually on a common bedplate and with the two shafts directly coupled or combined into a single shaft. [ Webster 1913 Suppl. ]

n. 1. One who, or that which, regenerates. [ 1913 Webster ]

2. (Mech.) A device used in connection with hot-air engines, gas-burning furnaces, etc., in which the incoming air or gas is heated by being brought into contact with masses of iron, brick, etc., which have been previously heated by the outgoing, or escaping, hot air or gas. [ 1913 Webster ]

a. Having power to renew; tending to reproduce; regenerating. G. S. Faber. [ 1913 Webster ]