Definition of microscope
1
: an optical instrument consisting of a lens or combination of lenses for making enlarged images of minute objects
especially
: compound microscope
2
: a non-optical instrument (such as one using radiations other than light or using vibrations) for making enlarged images of minute objects
an acoustic microscope
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Merriam-Webster unabridged
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Time Traveler for microscope
The first known use of microscope was in 1648
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