DictionaryFra•cas•to•ri•usPronunciation: (frä"ka-stôr'ē-us, -stōr'-), [key] —n. a walled plain in the fourth quadrant of the face of the moon: about 60 mi. (97 km) in diameter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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