Meaning of retrogression

ret•ro•gres•sion

Pronunciation: (re"tru-gresh'un), [key]
— n.
  1. the act of retrogressing; movement backward.
  2. degeneration; retrograde metamorphosis; passing from a more complex to a simpler structure.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: