an instrument for extracting tight-fitting components | the technical aspects of doing something |
an apparatus that uses centrifugal force to separate particles from a suspension | device consisting of a piece of machinery; has moving parts that perform some function |
a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector | (philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes |
| a natural object resembling a machine in structure or function |
| the atomic process that occurs during a chemical reaction |