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astrophysics: Meaning and Definition of

as•tro•phys•ics

Pronunciation: (as"trō-fiz'iks), [key]
— n. (used with a sing. v.)
  1. the branch of astronomy that deals with the physical properties of celestial bodies and with the interaction between matter and radiation in the interior of celestial bodies and in interstellar space.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
astrophotometry astrosphere
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