atomic vs thermonuclear

Of or relating to atoms; composed of atoms; monatomic. 

Guaranteed to complete either fully or not at all while waiting in a pause, and running synchronously when called by multiple asynchronous threads. 

Lacking logical operators; unable to be made simpler in logical form. 

Employing or relating to nuclear energy or processes. 

Infinitesimally small. 

Unable to be split or made any smaller. 

Containing a single change, as opposed to involving numerous unrelated changes. 

Of, or relating to the fusion of atomic nuclei at high temperatures. 

Of, or relating to the use of atomic weapons based on such fusion, especially as distinguished from those based on fission.