transmission/scanning electron microscopy

transmission/scanning electron microscopy (tranz·miˑ·shn/skyaˑ·ning i·lekˑ·trôn mīˈ·krôˑ·sk·pē),

n the use of focused beams of electrons to study either the surface features (i.e., scanning) or the interior structure and composition (i.e., transmission) of tiny structures.