the technical aspects of doing something | a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan |
device consisting of a piece of machinery; has moving parts that perform some function | heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings |
(philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes | any object that radiates energy |
a natural object resembling a machine in structure or function | |
the atomic process that occurs during a chemical reaction | |