Pronunciation: (mī'kru-skōp"), [key]
1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye.
2. (cap.) Astron.the constellation Microscopium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.