Search Result for "electron microscope":
Wordnet 3.0

NOUN (1)

1. a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light; 



WordNet (r) 3.0 (2006):

electron microscope
    n 1: a microscope that is similar in purpose to a light
         microscope but achieves much greater resolving power by
         using a parallel beam of electrons to illuminate the object
         instead of a beam of light