magnifier

from WordNet (r) 3.0 (2006)

magnifier
    n 1: a scientific instrument that magnifies an image

from The Collaborative International Dictionary of English v.0.48

Magnifier \Mag"ni*fi`er\, n.
   One who, or that which, magnifies.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "magnifier":
      achromatic lens, astigmatic lens, burning glass, camera,
      coated lens, concave lens, concavo-convex lens, condenser,
      convex lens, eyeglass, eyepiece, glass, hand lens, lens,
      magnifying glass, meniscus, object glass, objective,
      objective prism, ocular, prism, reader, reading glass,
      telephoto lens, toric lens, varifocal lens, zoom lens