philip glass

Medical Dictionary

glass (glās)
n.

  1. Any of a large class of materials with highly variable mechanical and optical properties that solidify from the molten state without crystallization, are typically made by silicates fusing with boric oxide, aluminum oxide, or phosphorus pentoxide, are generally hard, brittle, and transparent or translucent, and are considered to be supercooled liquids rather than true solids.

  2. Something usually made of glass, such as a window, mirror, drinking vessel.

  3. glasses A pair of lenses mounted in a light frame, used to correct faulty vision or protect the eyes. Also called spectacles.

  4. A device, such as a monocle or spyglass, containing a lens or lenses and used as an aid to vision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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