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Meaning of polyphagia

pol•y•pha•gi•a

Pronunciation: (pol"ē-fā'jē-u, -ju), [key]
— n.
  1. excessive desire to eat.
  2. the habit of subsisting on many different kinds of food.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.