the technical aspects of doing something | the center around which something rotates |
device consisting of a piece of machinery; has moving parts that perform some function | the 2nd cervical vertebra; serves as a pivot for turning the head |
(philosophy) the philosophical theory that all phenomena can be explained in terms of physical or biological causes | a straight line through a body or figure that satisfies certain conditions |
a natural object resembling a machine in structure or function | a group of countries in special alliance |
the atomic process that occurs during a chemical reaction | the main stem or central part about which plant organs or plant parts such as branches are arranged |