scanning electron microscopescan·ning electron microscope
a type of electron microscope in which a moving electron beam is used to scan an object causing it to emit secondary electrons which form a pattern that produces a three-dimensional image on the screen of a cathode-ray tube
scanning electron microscope
An electron microscope that forms a three-dimensional image on a cathode-ray tube by moving a beam of focused electrons across an object and reading both the electrons scattered by the object and the secondary electrons produced by it.
(plural scanning electron microscopes)