REDUCING n.
res. -- Reducing pipe fitting, a pipe fitting, as a coupling, an elbow, a tee, etc., for connecting a large pipe with a smaller one. -- Reducing valve, a device for automatically maintaining a diminished pressure of steam, air, gas, etc., in a pipe, or other receiver, which is fed from a boiler or pipe in which the p…
REFRIGERATOR n.
An apparatus for rapidly cooling heated liquids or vapors, connected with a still, etc. Refrigerator car (Railroad), a freight car constructed as a refrigerator, for the transportation of fresh meats, fish, etc., in a temperature kept cool by ice.
REGENERATOR n.
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.
RELATION n. 3 definitions
quality or condition; the being such and such with regard or respect to some other thing; connection; as, the relation of experience to knowledge; the relation of master to servant. Any sort of connection which is perceived or imagined between two or more things, or any comparison which is made by the mind, is a relati…