photosphere: Meaning and Definition of

pho•to•sphere

Pronunciation: (fō'tu-sfēr"), [key]
— n.
  1. a sphere of light or radiance.
  2. the luminous visible surface of the sun, being a shallow layer of strongly ionized gases.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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