simple_microscope
1. [ noun ] (optics) light microscope consisting of a single convex lens that is used to produce an enlarged image
Synonyms: magnifying_glass hand_glass
Examples:

"the magnifying glass was invented by Roger Bacon in 1250"

Related terms: light_microscope loupe
Similar spelling:   simple_machine
  simple_mindedness
  simple_mastectomy
  simple_interest