It has been used for hundreds of years to explain things that are small (as well as collection of neutrons, electrons and protons). The name that the Silverthorn collection of Intel processors will hold is Atom. Menlow will also get a name change following the shrinking of the core down to 45nm (see the Apple Air) to Centrino Atom. Now all we are waiting for is the collection of fast and low powered MID’s and UMPC with Atom’s Inside (TM Intel).
For more info, click over to Engadget.